"The megalodon went extinct 3.6 million years ago, and is thought to be the largest shark that ever swam the Earth. But there's debate over what it looked like."

"With confirmed or suspected cases in two Antarctic penguin species, researchers fear highly contagious virus could rip through colonies".

"Envision, for a moment, a multiyear period of extreme weather, including heat waves, freezes, droughts, floods, and windstorms, topped off by extreme weather during an El Niño event, leading to major crop failures in the U.S. A disruption of the global agricultural and food supply chain results, leading to panic buying and price shocks."

"An investigation into nearly 1,700 aquifers across more than 40 countries found that groundwater levels in almost half have fallen since 2000. Only about 7 percent of the aquifers surveyed had groundwater levels that rose over that same time period."

"The Biden administration is pausing a decision on whether to approve what would be the largest natural gas export terminal in the United States, a delay that could stretch past the November election and spell trouble for that project and 16 other proposed terminals, according to three people with knowledge of the matter."

"Populations of wild pigs are crashing due to the spread of African swine fever (ASF), threatening the livelihoods of millions who depend on them for food, researchers warn. With a fatality rate of almost 100%, ASF has swept across Asia, Europe and Africa, devastating domestic and wild pig populations over the past 10 to 20 years."

"Lack of data about conditions in the Russian Arctic is already hampering climate science, and will cause ever-growing gaps in our understanding of how climate change affects the fastest-warming region of the planet, scientists warn."