YCLOAK

Spinach is known as a super food for its nutritional value, but a new experiment reveals another power of the green leaf.

Researchers say they’ve grown beating human heart cells on spinach leaves, using the vascular network of the plant to transport fluids. The finding could eventually lead to being able to grow working human cardiac tissue that could one day be used to replace heart cells damaged by heart attacks.

“Plants and animals exploit fundamentally different approaches to transporting fluids, chemicals, and macromolecules, yet there are surprising similarities in their vascular network structures,” said researchers from Worcester Polytechnic Institute (WPI), the University of Wisconsin-Madison, and Arkansas State University-Jonesboro. “The development of decellularized plants for scaffolding opens up the potential for a new branch of science that investigates the mimicry between plant and animal.”

The breakthrough is important because so far, bioengineering such as 3-D printing, can’t replicate the complex system of blood vessels in the human body that deliver the oxygen, nutrients, and essential molecules required for proper tissue growth.

For the experiment, researchers first stripped plant cells from spinach leaves and passed beads the size of human blood cells through the leftover vascular system and seeded the spinach veins with human cells that line our blood vessels.

“We have a lot more work to do, but so far this is very promising,” said Glenn Gaudette, PhD, professor of biomedical engineering at WPI and corresponding author of the paper. “Adapting abundant plants that farmers have been cultivating for thousands of years for use in tissue engineering could solve a host of problems limiting the field.”

Researchers added that other plants have been shown to offer the same kind of promise, including parsley, Artemesia annua (sweet wormwood), and peanut hairy roots.

“The spinach leaf might be better suited for a highly vascularized tissue, like cardiac tissue, whereas the cylindrical hollow structure of the stem of Impatiens capensis (jewelweed) might better suit an arterial graft. Conversely, the vascular columns of wood might be useful in bone engineering due to their relative strength and geometries,” the authors wrote.

Using plants could also be economical.

“By exploiting the benign chemistry of plant tissue scaffolds,” researchers wrote, “we could address the many limitations and high costs of synthetic, complex composite materials. Plants can be easily grown using good agricultural practices and under controlled environments. By combining environmentally-friendly plant tissue with perfusion-based decellularization, we have shown that there can be a sustainable solution for pre-vascularized tissue engineering scaffolds.”

The paper, “Crossing kingdoms: Using decelluralized plants as perfusable tissue engineering scaffolds” is published online in advance of the May 2017 issue of the journal Biomaterials.
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President Donald Trump’s aides opened the door to working with moderate Democrats on health care and other issues while Senate Democratic leader Chuck Schumer quickly offered to find common ground with Trump for repairing former President Barack Obama’s health care law.

Schumer said Sunday that Trump must be willing to drop attempts to repeal his predecessor’s signature achievement, warning that Trump was destined to “lose again” on other parts of his agenda if he remained beholden to conservative Republicans.

Trump initially focused the blame for the failure on Democrats and predicted a dire future for the current law. But on Sunday he turned his criticism toward conservative lawmakers for the failure of the Republican bill, complaining on Twitter: “Democrats are smiling in D.C. that the Freedom Caucus, with the help of Club For Growth and Heritage, have saved Planned Parenthood & Ocare!”

The Freedom Caucus is a hard-right group of more than 30 GOP House members who were largely responsible for blocking the bill to undo the Affordable Care Act, or “Obamacare.”

The bill was pulled from the House floor Friday in a humiliating political defeat for the president, having lacked support from conservative Republicans, some moderate Republicans and Democrats.

In additional fallout from the jarring setback, Rep. Ted Poe, R-Texas, said he was leaving the caucus. Poe tweeted Friday that some lawmakers “would’ve voted against the 10 Commandments.”

“We must come together to find solutions to move this country forward,” Poe said Sunday in a written statement. “Saying `no’ is easy, leading is hard but that is what we were elected to do.”

On Sunday, Trump aides made clear that the president could seek support from moderate Democrats on upcoming legislative battles ranging from the budget and tax cuts to health care, leaving open the possibility he could revisit health care legislation. Whether he would work to repair Obama’s law was a big question.

White House chief of staff Reince Priebus scolded conservative Republicans, explaining that Trump had felt “disappointed” with a “number of people he thought were loyal to him that weren’t.”

“It’s time for the party to start governing,” Priebus said. “I think it’s time for our folks to come together, and I also think it’s time to potentially get a few moderate Democrats on board as well.”

As he ponders his next steps, Trump faces decisions on whether to back administrative changes to fix Obama’s health care law or undermine it as prices for insurance plans rise in many markets. Over the weekend, the president tweeted a promise of achieving a “great healthcare plan” because Obamacare will “explode.”

Priebus did not answer directly regarding Trump’s choice, saying that fixes to the health law will have to come legislatively and he wants to ensure “people don’t get left behind.”

“I don’t think the president is closing the door on anything,” he said.

Schumer, a New York Democrat, suggested that “if he changes, he could have a different presidency.”

“But he’s going to have to tell the Freedom Caucus and the hard-right special wealthy interests who are dominating his presidency … he can’t work with them, and we’ll certainly look at his proposals,” Schumer said.

Their comments came after another day of finger-pointing among Republicans, both subtle and otherwise. On Saturday, Trump urged Americans in a tweet to watch Judge Jeanine Pirro’s program on Fox News that night. She led her show by calling for House Speaker Paul Ryan to resign, blaming him for the defeat of the bill in the Republican-controlled chamber.

Priebus described the two events as “coincidental,” insisting that Trump was helping out a friend by plugging her show and no “preplanning” occurred.

“He doesn’t blame Paul Ryan,” Priebus said. “In fact, he thought Paul Ryan worked really hard. He enjoys his relationship with Paul Ryan, thinks that Paul Ryan is a great speaker of the House.”

Priebus said Trump was looking ahead for now at debate over the budget and a tax plan, which he said would include a border adjustment tax and middle-class tax cuts.

“It’s more or less a warning shot that we are willing to talk to anyone. We always have been,” he said. “I think more so now than ever, it’s time for both parties to come together and get to real reforms in this country.”

Congressman Mark Meadows, R-N.C., chairman of the Freedom Caucus, acknowledged he was doing a lot of “self-critiquing” after the health care defeat. He insisted the GOP overhaul effort was not over and that he regretted not spending more time with moderate Republicans and Democrats “to find some consensus.”

Priebus spoke on Fox News Sunday, and Schumer and Meadows appeared on ABC’s This Week.
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As East Africa struggles through a drought, scientists say climate change may be making the situation worse as a warming planet may be altering the weather patterns that bring rain to the region.

In Somalia, the rains failed late last year. And the rains before that were meager. Livestock have died. Crops have failed.

Famine threatens Somalia for the second time this decade.

While drought is not uncommon in this dry region, it has gotten worse, Chris Funk, a climate scientist at the University of California at Santa Barbara, said.

“What we’ve seen over, say, the last 35 years is that the rainfall during what’s called the long rains in East Africa has declined substantially,” Funk said.

He added the explanation may lie in an atmospheric cycle that links East Africa and the Pacific Ocean.

WATCH: Experts: Climate change may be making drought worse

Warm, wet air rises over the western Pacific, causing rain over Southeast Asia.

On the other side of the cycle, dry air descends over East Africa. That is why not much rain falls here even in normal years.

But when the western Pacific is warmer, it pushes the whole system harder: more rain over Southeast Asia, and more dry air descending on East Africa.

More dry air means more drought.

And Funk said the ocean is getting warmer.

“The warming over the western Pacific appears to be pretty much directly related to increasing greenhouse gases in the atmosphere,” he said.

Research shows that in the past, a warmer ocean meant a drier East Africa. But Funk says it is not entirely clear whether the current drying trend will continue.

“One of the things making it hard to look into the future is the fact that the story told by the global climate models, the climate change models, is pretty much the exact opposite of what we’re seeing in East Africa,” Funk said.

The models predict it should be getting wetter. But experts increasingly think the models may be flawed in this area.

Funk and others are working on it.

The short term is more clear. The western Pacific is still warmer than average. Which means the forecast is for a third season of disappointing rains.
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A massive renewable energy project could change the seascape of the Welsh city of Swansea in coming years. The plan is to encase the city’s lagoon in a horshoe shaped causeway that will serve as a giant tidal generator. The four year project is massive but if its approved would create a long-term reliable source of clean energy. VOA’s Kevin Enochs report.
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The World Health Organization and U.N. children’s fund are spearheading a massive immunization campaign across Africa to rid the continent of the last vestiges of polio.

Tens of thousands of health workers will fan out across 13 central and western African countries to vaccinate more than 116 million children under age five against the crippling disease.

The U.N. agencies report more than 190,000 volunteers, traveling on foot or bicycle, will go house to house across all cities, towns, and villages in 13 countries to vaccinate every child under age five against polio.

The synchronized vaccination campaign, one of the largest ever conducted in Africa, will run from March 25-28. Director of Polio Eradication at the World Health Organization Michel Zaffran said children must be immunized in a short span of time to raise childhood immunity to polio across the continent.

“The synchronization of this immunization campaign is needed to rapidly strengthen protection,” he said. “If all children are vaccinated at the same time or around the same time in a very short period of time, the virus cannot find anywhere to hide.”​

In August 2016, four children were paralyzed by polio in Borno State, in northeast Nigeria, which has been under attack by Boko Haram militants for several years. It was the first time in more than two years that polio was detected in Africa.

Governments in the Lake Chad basin declared a public health emergency and a vaccination campaign was conducted. Zaffran said there has been no case of polio since the last one was detected on August 21.

Nevertheless, he told VOA there is concern the polio virus still may be circulating in this area because of the humanitarian crisis, exacerbated by political instability and conflict. He said health workers are operating under very dangerous and difficult circumstances.

“We cannot be sure that some of our vaccinators or health workers cannot be collateral damages of suicide bombing, which is not directly attacking the vaccination site,” he said. “This has not been the target of these insurgents, but there could actually be hurt because of the proximity of the events.”

The African countries will be declared polio free if no case of polio is detected in the next three years.That will bring the goal of global polio eradication very near as only five cases of polio remain in Afghanistan and Pakistan.
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There are an estimated 1.1 million Syrian refugees in Lebanon, 500,000 of them are children. For many of them, getting enough food and water are their biggest challenges. Children who are hearing impaired face even bigger obstacles. But some of them are getting help, thanks to a U.S. based charity called Deaf Planet Soul. VOA’s Kevin Enochs reports.
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It was lights out in about 170 countries on Saturday as millions of people and thousands of cities took part in Earth Hour, a global effort to draw attention to climate change.

The World Wide Fund for Nature organized the first Earth Hour in 2007 in Australia. The international effort began as a grass-roots event to urge people to reduce their use of energy as a way to help combat climate change.

Dozens of well-known monuments, buildings and locales — from Red Square in Moscow to Big Ben in London to the Sydney Opera House to the Burj Khalifa, the world’s tallest building in Dubai — took part, dousing their lights for 60 minutes at 8:30 p.m., local time.

“We started Earth Hour in 2007 to show leaders that climate change was an issue people cared about,” coordinator Siddarth Das of WWF told the French news agency AFP. “For that symbolic moment to turn into the global movement it is today, is really humbling and speaks volumes about the powerful role of people in issues that affect their lives.”

Many events were staged to draw awareness to how human activities contribute to climate change.

In India, hundreds of cyclists participated in “Pedal for the Planet,” part of a campaign to encourage people to save energy and minimize the use of fossil fuels.

Organizer Anuj Mathur told Reuters news agency, “This is for our society, this is for the well-being of our planet and this is something we need to give to our kids, to our generation. So this we are doing for the planet, and this is a small initiative to show our commitment toward our country and society.”

Largest group of its kind

The World Wide Fund for Nature dates to 1961, when it was founded in Switzerland as the World Wildlife Fund. The world’s largest conservation organization changed its name years later to reflect a broader focus on all environmental issues rather than just wildlife; it is still known as the World Wildlife Fund in the United States and Canada, and all units worldwide use the acronym WWF.

In January, NASA and the U.S. National Oceanic and Atmospheric Administration said research has shown that 2016 was the hottest year on record, for the third year in a row. “The 2016 globally averaged surface temperature ended as the highest since record-keeping began in 1880,” the two agencies said.

They also said temperatures, raised mainly by man-made greenhouse gases and partly by a natural El Nino weather event that released heat from the Pacific Ocean, beat the previous record in 2015, when 200 nations signed on to the Paris Agreement, a plan to limit global warming.
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New data shows that parts of New Zealand’s South Island moved several meters closer to the North Island during last November’s 7.8 magnitude earthquake.

The data, including satellite radar imagery, shows that parts of New Zealand’s South Island have shifted more than 5 meters closer to the North Island, and that some areas were raised by up to 8 meters.

Other information has come from observations on the ground and the analysis of coastal regions by GNS science, a New Zealand government research agency.

The tremor, near the tourist town of Kaikoura, ruptured a swath of land almost 200 kilometers long.

Research coming out

GNS has published the first of 10 papers on the powerful quake in mid-November 2016 in the international journal Science. Two people were killed when the magnitude 7.8 earthquake struck and Kaikoura was cut off by landslides.

Ian Hamling is the lead author of the research paper. He says the shifting of the earth in New Zealand occurred when powerful seismic forces pulled the ground in different directions.

“It is kind of like a shearing, so I guess the classic people always think of is a San Andreas-style fault, where you get the two sides of the fault zone move in opposite directions,” Hamling said. “And so that is what we see, is that parts of inland Kaikoura up to Cape Campbell have gone to the northeast and then in some areas to the south of that have gone in the opposite direction.”

The earthquake struck last November northeast of the city of Christchurch. It was felt in the New Zealand capital, Wellington, on the North Island, 200 kilometers away.

Shaky Isles

Christchurch is still recovering from a devastating 2011 earthquake that killed 185 people and destroyed the city center.

New Zealand is known as the Shaky Isles. The South Pacific nation lies on the unpredictable Ring of Fire that circles almost the entire Pacific rim.

Each year more than 15,000 earthquakes are recorded in New Zealand, but only about 150 are large enough to be felt.

The research paper, led by GNS, included the work of 29 co-authors from 11 national and international institutes such as the NASA laboratory in California and the University of Leeds in Britain.
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Doctors at a Chicago-area hospital have successfully operated on a baby from Africa born with a parasitic twin and having four legs and two spines. VOA’s Bronwyn Benito reports the girl, known only as “Dominique” from Ivory Coast, is recovering well from the delicate and groundbreaking March 8 surgery and is expected to live a normal, fully functional life.
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Some Americans breathed a sigh of relief, others bubbled with frustration, and nearly all resigned themselves to the prospect that the latest chapter in the never-ending national debate over health care would not be the last.

The withdrawal of the Republican-sponsored health bill in the face of likely defeat Friday in the U.S. House seemed to ensure that the deep divisions over the Affordable Care Act and its possible replacement would continue to simmer.

As news spread, Americans fell into familiar camps, either happy to see a Democratic effort live another day, or eager to see Republicans regroup and follow through with their “repeal Obamacare” promises.

“Yessssss,” elated artist Alysa Diebolt, 27, of Eastpointe, Michigan, typed on Facebook in response to the news, saying she was relieved those she knew on Affordable Care Act plans wouldn’t lose their coverage. “I’m excited, I think it’s a good thing,” she said.

Millions more shared her view, and #KillTheBill was a top trending topic on Twitter on Friday afternoon.

Among those who have long sought to see Obama’s health law dismantled, though, there was disappointment or chin-up resolve that they still could prevail.

“Hopefully, they’ll get it right next time,” said Anthony Canamucio, 50, owner of a barbershop in Middletown Township, Pennsylvania. He gave his vote to Trump in November and wanted to see Obama’s health law repealed, but found himself rooting for the GOP replacement bill to fail. He is insured through his wife’s employer and laments the growing deductibles and out-of-pocket costs, blaming Obama’s law even as health economists say those trends in employer-provided health coverage preceded the legislation.

Sticking with Trump

For Canamucio, the Republicans’ bill didn’t go far enough in dismantling the ACA. But he remains steadfast behind Trump and said he believes the president will still deliver.

Cliff Rouse, 34, a banker from Kinston, North Carolina, likewise was willing to give the president he helped elect a chance to make good on his promise. He sees Obama’s law as government overreach, even as he knows it could help people like his 64-year-old father, who was recently diagnosed with dementia but refused to buy coverage under a law he disagreed with. Rouse sees Trump’s moves on health care as hasty but believes the GOP will eventually come around with better legislation.

“They’ve not had enough time to develop a good plan,” Rouse said. “They should keep going until they have a good plan that Americans can feel confident in.”

It remained far more than a petty political debate, though, and some like Janella Williams, framed the issue as a question of life and death.

The 45-year-old graphic designer from Lawrence, Kansas, spent Friday in the hospital hooked up to an intravenous drip for a neurological disorder, getting the drugs that she says allow her to walk. Under her Affordable Care Act plan, she pays $480 a month for coverage and has an out-of-pocket maximum of $3,500 a year. If she were to lose it, she wouldn’t be able to afford the $13,000-a-year out-of-pocket maximum under her husband’s insurance. Her treatments cost about $90,000 every seven weeks.

As she followed the efforts to undo Obama’s law, Williams found herself yelling at the TV a lot. She wrote her senators, telling how she felt “helpless and out of control,” and how her hope was dwindling.

‘I am thankful’

After watching coverage on Friday while tethered to a port in an outpatient area, she said when the bill was withdrawn, “I am thankful. I hope that this makes Trump the earliest lame duck ever.”

Whatever comes of the developments, they became the latest chapter in a long-running policy debate — from Teddy Roosevelt’s call for national health insurance in 1912; through waves of New Deal and Great Society legislation that brought Social Security, Medicare and Medicaid, but no comprehensive health system for all; to an unsuccessful attempt at universal coverage at the start of Bill Clinton’s administration. For now at least, Trump joins a list of American presidents who sought but failed to bring major health-related reform.

Trump has railed against the 2010 ACA since the start, and GOP leaders in Congress have rallied for its repeal with dozens of votes during the Obama years. Republicans won the chance to replace the health law with Trump’s win and control of both chambers of Congress.

“This is our opportunity to do it,” White House spokesman Sean Spicer said Friday. “We’ve talked about this thing since 2010. Every Republican … has campaigned, from dogcatcher on up, that they would do everything they could to repeal and replace Obamacare.”

ACA approval rises

Meantime, the Affordable Care Act has enjoyed growing approval with Obama’s departure from the White House and the emergence of details of Trump’s plan. For the first time, the law drew majority approval in a Pew Research Center poll last month, with 54 percent of Americans in favor.

Even some of Trump’s voters have come around to supporting the Obama law, or to a late realization that their coverage was made possible by it.

Walt Whitlow, 57, a carpenter from Volente, Texas, gave Trump his vote even as he came to view Obama’s law as “an unbelievable godsend.” He went without health coverage for nearly 20 years, but after the ACA passed, he signed up. Two months later, he was diagnosed with tongue cancer. He proclaims himself opposed to government handouts that he thinks people grow too dependent on, though he wouldn’t say what he hoped would happen with the GOP bill. Still, its withdrawal brought relief for a man who said his ACA coverage kept him from massive debt and maybe worse.

“It saved my life,” he said. “I really don’t know what to say.”
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