When it comes to measuring global warming, humidity, not just heat, matters in generating dangerous climate extremes, a new study finds.  Researchers say temperature by itself isn’t the best way to measure climate change’s weird weather and downplays impacts in …

A group of pharmaceutical companies and distributors agreed to pay $590 million to settle lawsuits connected to opioid addiction among Native American tribes, according to a U.S. court filing released Tuesday.  The agreement is the latest amid a deluge of …

A single lightning bolt that leapt across three U.S. states has been identified as the longest ever, the U.N. weather agency said Tuesday. Dubbed a megaflash, the rare low-rate horizontal discharge covered 768 kilometers (477 miles) between clouds in Texas …

The World Health Organization warns of health care risks posed by discarded COVID-19 equipment and is calling on nations to better manage their systems for disposing of the used gear. Tackling the COVID-19 pandemic requires the use of huge quantities …