YCLOAK

A South African researcher has developed a way to remove contaminants from water used in mining that could help clean up the dirty industry. The award-winning ion exchange method not only cleans the water but captures polluting metals that can then be re-purposed.

At a Johannesburg laboratory, researchers from the University of the Witwatersrand have developed a way to clean acid mine drainage (AMD).

AMD is the runoff of pollutants like sulfuric acid and heavy metals that secrete into waterways, affecting wildlife and rural mining communities.

AMD is often found at gold and coal mines, which are plentiful in South Africa.

Tamlyn Naidu is a post-doctoral research fellow involved in the project.

“What we wanted to do is minimize environmental impact for a lot of these communities that are afflicted by AMD. They have been born into mining communities, they work in mining communities, they’re either scared to report it or to complain about it, because this is their livelihood,” she said.

The ion exchange filtration system that Naidu and her colleagues have developed uses countless polystyrene beads, each the size of a pinhead, which the water passes through.

Unlike a coffee filter, which physically blocks coffee grounds from passing through with water, the beads grab the contaminants in the water chemically.

The passing water, which can be scaled up to clean 1,000 liters an hour, then comes out clear.

“This project though, does something extra. It also wants to extract from the water valuable materials. So what has been identified in some of these streams, especially coal mining streams, is that the acid that’s produced from the mine waters actually dissolves out some rare earth metals,” says Ed Hardwick, the owner of Cwenga Technologies, which is a partner in the research.

Rare earth metals are in huge demand globally because they can be used in new technology like electric vehicles. Being able to extract them adds a financial incentive to cleaning up AMD.

Naidu said she hopes this can empower communities by monetizing the extracted materials from the AMD.

“Ultimately, from this project, we want community members to be involved in something that’s easy for them to operate, that they can extract value from and start, you know, seeing the value that companies have been taking onto the land and taken away from them. And yeah, I guess adding to their quality of life,” she says.

A method to clean up AMD that can be monetized would be good news for the government and communities that are now burdened with the costly task.

“If this was going to be an incentive, it should be on the incentive of the state and that any monies that are obtained from the separation of those minerals that can be repurposed, that can be used, is then fed back into one rehabilitation, but also two, into creating sustainable economies for the communities that are impacted,” says Tarisai Mugunyani, an attorney with the Center for Environmental Rights in Johannesburg.

Researchers say they are hopeful their filtration system, which can be adapted to clean the unique chemistry of AMD at any site, will soon be adopted widely.

It has already gained international attention with Naidu taking the first prize for emerging talents breakthroughs at the Falling Walls Science Summit in Berlin last month.

Naidu said several companies in mining and technology sectors have contacted her about becoming involved.
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Fighting between the Democratic Republic of Congo’s military and rebels has since March displaced nearly 400,000 people, with most IDP camps in Nyiragongo territory, where health centers are struggling to cope. Ruth Omar Esther visited a medical center in Nyiragongo and has this report.
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New Zealand on Tuesday passed into law a unique plan to phase out tobacco smoking by imposing a lifetime ban on young people buying cigarettes.

The law states that tobacco can’t ever be sold to anybody born on or after January 1, 2009.

It means the minimum age for buying cigarettes will keep going up and up. In theory, somebody trying to buy a pack of cigarettes 50 years from now would need ID to show they were at least 63 years old.

But health authorities hope smoking will fade away well before then. They have a stated goal of making New Zealand smoke-free by 2025.

The new law also reduces the number of retailers allowed to sell tobacco from about 6,000 to 600 and decreases the amount of nicotine allowed in tobacco that is smoked.

“There is no good reason to allow a product to be sold that kills half the people that use it,” Associate Minister of Health Dr. Ayesha Verrall told lawmakers in Parliament. “And I can tell you that we will end this in the future, as we pass this legislation.”

She said the health system would save billions of dollars from not needing to treat illnesses caused by smoking, such as cancer, heart attacks, strokes, and amputations. She said the bill would create generational change and leave a legacy of better health for youth.

Lawmakers voted along party lines in passing the legislation 76 to 43.

The libertarian ACT party, which opposed the bill, said many small corner stores, known in New Zealand as dairies, would go out of business because they would no longer be able to sell cigarettes.

“We stand opposed to this bill because it’s a bad bill and its bad policy, it’s that straightforward and simple,” said Brooke van Velden, ACT’s deputy leader. “There won’t be better outcomes for New Zealanders.”

She said the gradual ban amounted to “nanny-state prohibition” that would end up creating a large black market. She said prohibition never worked and always ended with unintended consequences.

The law does not affect vaping, which has already become more popular than smoking in New Zealand.

Statistics New Zealand reported last month that 8% of New Zealand adults smoked daily, down from 16% ten years ago. Meanwhile, 8.3% of adults vaped daily, up from less than 1% six years ago.

Smoking rates remain higher among Indigenous Māori, with about 20% reporting they smoked.

New Zealand already restricts cigarette sales to those aged 18 and over, requires tobacco packs to come with graphic health warnings and cigarettes to be sold in standardized packs.

New Zealand in recent years also imposed a series of hefty tax hikes on cigarettes.

The law change was welcomed by several health agencies. Health Coalition Aotearoa said the new law represented the culmination of decades of hard-fought advocacy by health and community organizations.
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The Department of Energy planned an announcement Tuesday on a “major scientific breakthrough” at the Lawrence Livermore National Laboratory, one of several sites worldwide where researchers have been trying to develop the possibility of harnessing energy from nuclear fusion. 

It’s a technology that has the potential to one day accelerate the planet’s shift away from fossil fuels, which are the major contributors to climate change. The technology has long struggled with daunting challenges. 

Here’s a look at exactly what nuclear fusion is, and some of the difficulties in turning it into the cheap and carbon-free energy source that scientists believe it can be. 

What is nuclear fusion? 

Look up, and it’s happening right above you — nuclear fusion reactions power the sun and other stars. 

The reaction happens when two light nuclei merge to form a single heavier nucleus. Because the total mass of that single nucleus is less than the mass of the two original nuclei, the leftover mass is energy that is released in the process, according to the Department of Energy. 

In the case of the sun, its intense heat — millions of degrees Celsius — and the pressure exerted by its gravity allow atoms that would otherwise repel each other to fuse. 

Scientists have long understood how nuclear fusion has worked and have been trying to duplicate the process on Earth as far back as the 1930s. Current efforts focus on fusing a pair of hydrogen isotopes — deuterium and tritium — according to the Department of Energy, which says that particular combination releases “much more energy than most fusion reactions” and requires less heat to do so. 

How valuable would this be?

Daniel Kammen, a professor of energy and society at the University of California at Berkeley, said nuclear fusion offers the possibility of “basically unlimited” fuel if the technology can be made commercially viable. The elements needed are available in seawater. 

It’s also a process that doesn’t produce the radioactive waste of nuclear fission, Kammen said. 

How are scientists trying to do this? 

One way scientists have tried to recreate nuclear fusion involves what’s called a tokamak — a doughnut-shaped vacuum chamber that uses powerful magnets to turn fuel into a superheated plasma (between 150 million and 300 million degrees Celsius) where fusion may occur. 

The Livermore lab uses a different technique, with researchers firing a 192-beam laser at a small capsule filled with deuterium-tritium fuel. The lab reported that an August 2021 test produced 1.35 megajoules of fusion energy — about 70% of the energy fired at the target. The lab said several subsequent experiments showed declining results, but researchers believed they had identified ways to improve the quality of the fuel capsule and the lasers’ symmetry. 

“The most critical feature of moving fusion from theory to commercial reality is getting more energy out than in,” Kammen said. 
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A Franco-U.S. satellite is due for launch this week on a mission to survey with unprecedented accuracy nearly all water on Earth’s surface for the first time and help scientists investigate its impact on Earth’s climate.

For NASA and France’s space agency CNES, which have worked together in the field for 30 years, it’s a landmark scientific mission with a billion-dollar budget.

French President Emmanuel Macron went to NASA’s Washington headquarters at the end of November alongside U.S. Vice President Kamala Harris.

He highlighted the liftoff — scheduled for early Thursday on the U.S. West Coast — of the Surface Water and Ocean Topography (SWOT) mission to monitor the levels of oceans, lakes and rivers, including in remote locations.

Its predecessor, TOPEX/Poseidon, launched in 1992, was also a Franco-U.S. joint venture that measured ocean surface to an accuracy of 4.2 centimeters (1.7 inches).

It aided the forecast of the 1997-1998 El Nino weather phenomenon and improved understanding of ocean circulation and its effect on global climate.

The 2.2-metric ton SWOT mission will be put into orbit from Vandenberg Space Force Base in California atop a SpaceX Falcon 9 rocket.

The satellite’s primary payload is an innovative instrument to measure the height of water called KaRin, or Ka-band radar interferometer. Its two antennas, separated by a big boom, create parallel swaths of data.

“We’re going to get 10 times better resolution than with current technologies to measure sea-surface height and understand the ocean fronts and eddies that help shape climate,” said NASA Earth Science Division Director Karen St. Germain.

“It’s like looking at a car number plate from space when before we could only see a street,” added Thierry Lafon, SWOT project leader at the CNES.

The stakes are high. While the impact of major ocean currents such as the Gulf Stream is known, more local flows and eddies covering dozens of kilometers remain more of a mystery.

But they too affect sea water surface temperatures and heat transfer as well as the absorption by the oceans of carbon dioxide from the atmosphere.

SWOT will improve weather and climate modeling, the observation of coastal erosion and help track how fresh and saltwater bodies change over time.

With an “optimal” orbit of 890 kilometers (about 550 miles) above Earth, Lafon said SWOT will “take in all the components that affect water levels such as tides and the sun.”

NASA said SWOT will survey nearly all water on Earth’s surface for the first time.

It will monitor water levels, surface areas and quantities at more than 20 million lakes with shores of more than 250 meters. The entire length of rivers more than 100 meters wide will also be observed.

Water management, flood and drought prevention will be improved, said Lafon.

Flying the satellite to Vandenberg from the Thales Alenia Space (TAS) site in Cannes, southern France, proved a headache.

“Due to the conflict in Ukraine, there were no more Antonov 124s available, and the 747 cargo is too small,” said TAS project leader Christophe Duplay. “We decided to ask the [U.S. Air Force] to provide one of its C-5 Galaxies.”

And that meant counting on NASA to have the air force supply one of its rare giant aircraft to ship the huge payload.

SWOT has an estimated three-year lifetime — although Lafon said “nothing precludes the mission to last five to eight years” — and is set to become the first satellite to make a controlled reentry into Earth’s atmosphere, reducing the amount of space debris, in line with the French space operations act.

Nearly 80% of the 400 kilos (880 pounds) of onboard fuel will be used to that end.
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The United States Department of Energy on Tuesday is expected to announce that its scientists have been able to engineer a nuclear fusion reaction that produced more energy than it consumed, a landmark achievement in a decadeslong search for a way to generate clean and waste-free nuclear power.

The pending announcement, first reported by the Financial Times and subsequently confirmed by other media organizations, will identify the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory in California as the site of the experiment.

On Monday, the department announced that Energy Secretary Jennifer Granholm would announce “a major scientific breakthrough” at a news conference Tuesday.

The announcement comes at a time when the Biden administration has directed renewed effort and funding to the development of clean power generation, with a particular emphasis on fusion energy. The recently passed Inflation Reduction Act contained significant funding for research in the field.

Just because scientists have been able to engineer an energy-positive fusion reaction does not mean that any meaningful changes to the way humans generate power are on the horizon. Experts said that while the work is important, daunting technological barriers remain in the way of systems that could deploy fusion energy at scale.

A long journey

Scientists have long known that when two atoms are fused together to form a new element, large amounts of energy are released. The sun, for example, is essentially an enormous fusion reactor in which superheated particles come together with tremendous force, forming new particles and releasing excess energy as heat.

As long ago as the 1940s, scientists began experimenting with fusion reactors. While they have long been able to generate fusion reactions, until now, those reactions have always required inputs of energy that exceeded the amount they ultimately produced.

The reason a net-positive fusion reaction has been so elusive is in large part because scientists have to generate extreme conditions in the laboratory in order to make the reactions occur. Typically, enormous lasers are used to heat isotopes of hydrogen to temperatures in the millions of degrees Celsius. The resulting plasma is then confined under extremely high pressure, causing the isotopes to come together with enough force that they fuse into a different element, releasing energy as heat when they do.

An important element of the announcement on Tuesday will be the way in which the government defines a “net positive” energy result. Typically, that means that the reaction being measured produced more energy than the laser beams directed at the hydrogen. However, the lasers used in the experiment are far from perfectly efficient, meaning that it takes more energy to power them than they ultimately bring to bear on their targets.

For a fusion reaction to be “net positive” in the sense of generating more energy than the total energy put into the experiment — including waste — the reaction would have to produce substantially more energy than that consumed by the laser beams directed at the hydrogen.

Enormous engineering challenges

Maintaining equipment that can tolerate such extreme temperatures is extraordinarily difficult, and finding a way to create reactors that can tolerate the stresses involved in the process for long periods of time is one of the many challenges facing researchers in the field.

Ian H. Hutchinson, a professor of nuclear science and engineering at Massachusetts Institute of Technology said that it was important not to read too much into preliminary reports, noting that prior to the official announcement few details of what, precisely, the scientists at the NIF have achieved was known.

“It seems an important scientific confirmation of inertial fusion ignition, but I would hesitate to call it a ‘breakthrough,’” Hutchinson said in an email exchange with VOA. “The NIF program is not aimed at fusion energy production but at understanding fusion explosions. Useful energy production from miniature fusion explosions still faces enormous engineering challenges, and we don’t know if those challenges can be overcome.”

The NIF is most closely associated with the United States’ nuclear weapons program, and its primary purpose is to recreate nuclear explosions on a small and controllable scale, allowing for the maintenance of the country’s nuclear arsenal without the need for destructive full-scale testing.

Benefits of fusion

There are several reasons why scientists have spent so many years in search of a means of making fusion reactors viable sources of energy.

If fusion reactors were to replace fossil fuels as an energy source, it would dramatically reduce the amount of carbon released into the atmosphere, reducing one source of global warming.

Unlike fission reactors, which use highly enriched radioactive materials like uranium and plutonium as fuel, fusion reactors can theoretically be fueled by hydrogen, the most abundant element in the universe, meaning that the fuel supply for a fusion reactor is essentially infinite.

Also, unlike fission reactors, fusion reactors do not produce highly radioactive waste, eliminating the need to safely store materials that will continue to be dangerous, in some cases, for thousands of years.

Finally, despite the extreme conditions under which fusion occurs, fusion reactors are considered to be safer to operate than fission reactors, which must be constantly monitored in order to avoid conditions leading to destabilization and explosion. In the two worst nuclear disasters in history, explosions at nuclear facilities at Chernobyl in the Soviet Union in 1986 and at Fukushima in Japan in 2011 forced the evacuation of thousands of people and rendered vast expanses of both countries uninhabitable.

 
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French President Emmanuel Macron says free condoms will be available in pharmacies for any adult up to the age of 25 starting next year.

The new measure comes as the rate of sexually transmitted diseases and inflation are both on the rise in France.

Originally, Macron announced that the condoms would be available to people between the ages of 18 to 25, but he was challenged on social media about not making the condoms available to minors and he decided to expand the program to anyone up to the age of 25. 

Girls and women already receive free birth control in France. 

Some information in this report came from The Associated Press.
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Industry executives have joined activists and negotiators from nearly 200 countries at this month’s U.N. nature summit in Montreal, where negotiations on a global pact to protect nature could lead to tougher disclosure requirements for businesses.

Sectors such as mining, agriculture, oil and fashion are under scrutiny at the COP15 talks, due to their heavy impact on nature with activities that can contaminate soil, foul waterways or pollute the air.

As negotiators work to agree on conservation targets by the summit’s scheduled end on December 19, momentum is building for a measure to require businesses to disclose their harm to the environment.

The measure, as currently drafted, would also ask companies to halve those negative impacts by 2030, which could mean additional costs for businesses, said Franck Gbaguidi, senior analyst for energy, climate and resources at the Eurasia Group risk advisory.

But a weak deal without global agreement on how businesses should behave could also raise company costs — by opening the door to a global patchwork of different biodiversity regulations and requirements that makes compliance more difficult, Eurasia Group said in a policy statement.

Here is a look at how key sectors could be affected by the COP15 talks:

Fashion/Retail

Fashion and retail are facing pressure from consumers and governments to reduce waste and emissions throughout their operations.

For them, a strong deal that forces all companies to report any harm would work toward assuaging some consumer concerns.

In a letter to world governments in October, more than 330 companies including Swedish fashion giant H&M Group, furniture maker IKEA, British pharmaceutical and biotech company GSK and Switzerland’s Nestle came out in support of a COP15 deal that includes mandatory disclosure of companies’ environmental impacts by 2030.

Smaller companies with limited resources for monitoring and accounting could find a disclosure requirement more challenging.

Mining

For companies mining metals and coal, an environmental disclosure requirement could force companies to reveal the impacts not just from the blasting and drilling they do on site, but also from the logging and deforestation carried out in creating access roads.

Mining companies are also concerned about the central goal of the COP15 talks — to set aside 30% of Earth’s land and ocean areas for conservation by 2030. That could cut into areas rich with resources for extraction.

“There are going to be some places which are just going to be ‘no go areas’, and that can be hard for the mining sector,” said Aimee Boulanger, executive director of the Initiative for Responsible Mining Assurance.

The International Council on Mining and Metals, which represents 26 of the world’s largest mining companies, would back a deal that sets “a level playing field” with uniform rules in all regions, said the group’s chief executive, Rohitesh Dhawan.

Agriculture

With new disclosure rules, the farming sector would face an increased burden of reporting on activities like land clearing and pesticide use.

Hefty reporting obligations could burden smaller farms and ranches, some industry groups warned.

“A lot of our producers are family businesses,” said Larry Thomas, manager environment and sustainability with the Canadian Cattle Association.

The agriculture sector will likely escape a separate proposed goal to slash pesticide in half, said the Eurasia Group analyst Gbaguidi, following opposition from developing countries like Brazil, Argentina, and Paraguay due to food shortages and higher prices.

“Because of the food crisis, a lot of emerging markets are just not as open as they would have been on setting bold targets related to the agricultural sector,” Gbaguidi said.

Oil

Following COP15, oil companies are expected to ramp up their internal resources for reporting on and disclosing how oil drilling and exploration activities impact nature as well, Gbaguidi said.

The American Petroleum Institute did not respond to a request for comment on the COP15 talks.

The Canadian Association of Petroleum Producers said the country’s oil and natural gas industry wants to minimize marine and land disturbances, while also quickly restoring lands degraded by their operations to natural landscapes, CAPP spokesperson Jay Averill said.
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The U.S. Department of Energy said Sunday it would announce a “major scientific breakthrough” this week, after media reported a federal laboratory had recently achieved a major milestone in nuclear fusion research.

The Financial Times reported Sunday that scientists in the California-based Lawrence Livermore National Laboratory (LLNL) had achieved a “net energy gain” from an experimental fusion reactor.

That would represent the first time that researchers have successfully produced more energy in a fusion reaction — the same type that powers the Sun — than was consumed during the process, a potentially major step in the pursuit of zero-carbon power.

Energy Department and LLNL spokespeople told AFP they could not comment or provide confirmation regarding the FT report, but said US Energy Secretary Jennifer Granholm would “announce a major scientific breakthrough” on Tuesday.

The LLNL spokesperson added that their “analysis is still ongoing.”

“We look forward to sharing more on Tuesday when that process is complete,” she said.

The fusion reaction that produced a 120 percent net energy gain occurred in the past two weeks, the FT said, citing three people with knowledge of the preliminary results.

The Washington Post later reported two people familiar with the research confirmed the development, with a senior fusion scientist telling the newspaper, “To most of us, this was only a matter of time.”

Nuclear fusion is considered by some scientists to be a potential energy of the future, particularly as it produces little waste and no greenhouse gases.

“If this fusion energy breakthrough is true, it could be a game changer for the world,” tweeted Ted Lieu, a member of Congress from California.

Fusion differs from fission, the technique currently used in nuclear power plants, by fusing two atomic nuclei instead of splitting one.

The LLNL fusion facility consists of almost 200 lasers the size of three football fields, which bombard a tiny spot with high levels of energy to initiate a fusion reaction.
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One of the challenges of fighting climate change is balancing the need to shift to cleaner sources of energy in the future with the need to keep the lights on in the here and now. It’s no different for Indonesia, with its rapidly growing economy, as VOA’s Yuni Salim explains in this report narrated by Nova Poerwadi.
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One of China’s top health experts has warned of a surge in COVID-19 cases, state media said Sunday, in the wake of the government’s decision to abandon its hardline coronavirus strategy.

Shops and restaurants in Beijing are deserted as the country awaits a spike in infections following the decision to reduce the scope of mandatory testing, allow some positive cases to quarantine at home and end large-scale lockdowns.

Top epidemiologist Zhong Nanshan told state media in an interview published Sunday that the Omicron strain of the virus prevalent in China was highly transmissible and could lead to a surge in cases.

“The [current] Omicron mutation… is very contagious… one person can transmit to 22 people,” said Zhong, a leading advisor to the government throughout the pandemic.

“Currently, the epidemic in China is… spreading rapidly, and under such circumstances, no matter how strong the prevention and control is, it will be difficult to completely cut off the transmission chain.”

The easing of China’s so-called “zero-COVID” policy followed nationwide protests against harsh virus rules that had battered the economy and confined millions to their homes.

But the country is now facing a surge of cases it is ill-prepared to handle, with millions of elderly still not fully vaccinated and underfunded hospitals lacking the capacity to take on huge numbers of patients.

The country has one intensive care unit bed for 10,000 people, Jiao Yahui, director of the Department of Medical Affairs at the National Health Commission, warned Friday.

She said 106,000 doctors and 177,700 nurses will be redirected to intensive care units to cope with the spike in coronavirus patients but did not offer details on how this would affect the health system’s ability to treat other diseases.

‘I’m afraid to step out’

Long lines sprung up outside pharmacies in Beijing on Sunday as residents rushed to stockpile cold and fever medicines and antigen test kits.

Some told AFP they were ordering drugs from pharmacies in nearby cities.

“I’ve asked my family in Shijiazhuang to courier fever medicine because nearby pharmacies don’t have stocks,” said Julie Jiang, a Beijing resident.

Dozens of restaurants and small businesses in Beijing put up signs saying they were “temporarily closed”, without offering details.

Several major online grocery and food delivery platforms including Meituan, Fresh Hippo and Ding Dong were struggling to operate in Beijing without enough delivery drivers.

“I’m afraid to step out,” said Liu Cheng, a mother of two young children living in central Beijing’s Jianguomen area.

“Many of my friends with COVID symptoms have tested positive when self-testing, but they haven’t reported this to the authorities or gone to the hospital.”

Official caseloads in China have dropped sharply in the wake of the government’s decision to scrap routine mass testing, with only special groups including healthcare workers and delivery drivers exempt from the rules.
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After making a close pass at the moon and venturing further into space than any previous habitable spacecraft, NASA’s Orion capsule is due to splash down Sunday in the final test of a high-stakes mission called Artemis.

As it hurtles into Earth’s atmosphere at a speed of 40,000 kph, the gumdrop-shaped traveler will have to withstand a temperature of 2,800 degrees Celsius — about half that of the surface of the sun.

Splashdown in the Pacific off the Mexican island of Guadalupe is scheduled for 1739 GMT (9:39 am local time).

Achieving success in this mission of just over 25 days is key for NASA, which has invested tens of billions of dollars in the Artemis program due to take people back to the moon and prepare for an onward trip, someday, to Mars.

So far, the first test of this uncrewed spacecraft has gone very well.

But it is only in the final minutes of this voyage that the true challenge comes: seeing if Orion’s heat shield, the biggest ever built, actually holds up.

“It is a safety-critical piece of equipment. It is designed to protect the spacecraft and the passengers, the astronauts on board. So the heat shield needs to work,” said Artemis mission manager Mike Sarafin.

A first test of the capsule was carried out in 2014 but that time the capsule stayed in Earth’s orbit, so it came back into the atmosphere at a slower speed of around 32,000 kph.

Choppers, divers and boats

A U.S. Navy ship, the USS Portland, has been positioned in the Pacific to recover the Orion capsule in an exercise that NASA has been rehearsing for years. Helicopters and inflatable boats will also be deployed for this task.

The falling spacecraft will be slowed first by the Earth’s atmosphere and then a web of 11 parachutes until it eases to a speed of 30 kph when it finally hits the Pacific.

Once it is there, NASA will let Orion float for two hours — a lot longer than if astronauts were inside — to collect data.

“We’ll see how the heat soaks back into the crew module and how that affects the temperature inside,” said Jim Geffre, NASA’s Orion vehicle integration manager.

Divers will then attach cables to Orion to hoist it onto the USS Portland, which is an amphibious transport dock vessel, the rear of which will be partly submerged. This water will be pumped out slowly so the spacecraft can rest on a platform designed to hold it.

This should all take about four to six hours from the time the vessel first splashes down.

The Navy ship will then head for San Diego, California, where the spacecraft will be unloaded a few days later.

When it returns to Earth, the spacecraft will have traveled more than 2 million kilometers since it took off Nov. 16 with the help of a monstrous rocket called SLS.

At its nearest point to the moon, it flew less than 130 kilometers from the surface. And it broke the distance record for a habitable capsule, venturing 432,000 kilometers from our planet.

Artemis 2 and 3

Recovering the spacecraft will allow NASA to gather data that is crucial for future missions.

This includes information on the condition of the vessel after its flight, data from monitors that measure acceleration and vibration, and the performance of a special vest put on a mannequin in the capsule to test how to protect people from radiation while flying through space.

Some components of the capsule should be good for reuse in the Artemis 2 mission, which is already in advanced stages of planning.

This next mission planned for 2024 will take a crew toward the moon but still without landing on it. NASA is expected to name the astronauts selected for this trip soon.

Artemis 3, scheduled for 2025, will see a spacecraft land for the first time on the south pole of the moon, which features water in the form of ice.

Only 12 people — all of them white men — have set foot on the moon. They did this during the Apollo missions, the last of which was in 1972.

Artemis is scheduled to send a woman and a person of color to the moon for the first time.

NASA’s goal is to establish a lasting human presence on the moon, through a base on its surface and a space station circling around it. Having people learn to live on the moon should help engineers develop technologies for a years-long trip to Mars, maybe in the late 2030s.
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A winter storm packing high winds and potentially several feet of snow blew into the Sierra Nevada on Saturday, triggering thousands of power outages in California, closing a mountain highway at Lake Tahoe, and prompting an avalanche warning in the backcountry.

The storm is expected to bring as much as 1.2 meters of snow to the upper elevations around Lake Tahoe by Monday morning, the National Weather Service said.

A 400-kilometer stretch of the Sierra from north of Reno to south of Yosemite National Park was under a winter storm warning at least until Sunday.

“Travel will be very difficult to impossible with whiteout conditions,” the weather service said in Reno, where rain started falling Saturday.

A flood advisory was in effect from Sacramento to the California coast near San Francisco.

The U.S. Forest Service issued an avalanche warning for the backcountry in the mountains west of Lake Tahoe where it said “several feet of new snow and strong winds will result in dangerous avalanche conditions.”

A stretch of California Highway 89 was closed because of heavy snow between Tahoe City and South Lake Tahoe, California, the highway patrol said. Interstate 80 between Reno and Sacramento remained open, but chains were required on tires for most vehicles.

More than 30,000 customers were without power in the Sacramento area at one point Saturday morning. It had been restored to all but about 3,300 by midday. But forecasters warned winds gusting up to 80 kph could bring down tree branches and power lines later in the day.

About 25 centimeters of snow already had fallen at Mammoth Mountain ski resort south of Yosemite where more than 3 meters of snow has been recorded since early November.

“It just seems like every week or so, another major storm rolls in,” resort spokeswoman Lauren Burke said.

The storm warning stretches into Sunday for most of the Sierra and doesn’t expire until Monday around Tahoe.

As much as 45 to 71 centimeters of snow was forecast through the weekend at lake level, and up to 1.2 meters at elevations above 2,133 meters with 80 kph winds and gusts up to 160 kph.

On the Sierra’s eastern slope, a winter weather advisory runs from 10 p.m. Saturday to 10 a.m. for Reno, Sparks and Carson City, with snow accumulations of 2.5-7.5 cm on valley floors and up to 20 cm above 1,524 meters.
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