Selective extinction of apex predators suggests a shift to more generalist diets. A global catastrophe 66 million years ago led to the extinction of all non-avian dinosaurs, and large marine reptiles like mosasaurs and plesiosaurs. But what happened to the sharks? According to a study of sharks’ teeth publishing August […]

If rocks from Earth containing microbial life entered Venus’s orbit in the past, this life may have adapted to Venus’s atmospheric conditions. The death of the dinosaurs 66 million years ago was caused by the impact of a huge asteroid on the Earth. However, paleontologists have continued to debate whether […]

A global study finds that species numbers reported in the wild fell sharply between 1990 and 2015. PHOTOGRAPH: DEAGOSTINI/GETTY IMAGES THIS STORY ORIGINALLY appeared in The Guardian and is part of the Climate Desk collaboration. The number of wild bee species recorded by an international database of life on earth has declined by a quarter […]

The scalloped hammerhead shark is critically endangered from overfishing. MARK CONLIN/VW PICS/UIG VIA GETTY IMAGE Shark populations in the high seas have fallen by 71% since 1970, researchers have found. The main cause is overfishing, which has put three-quarters of these species at risk of extinction. “It’s the first big […]

Over millions of years, most living organisms suffocated in oxygen-deprived oceans. In the aftermath, modern vertebrates conquered the world. (Credit: Rich Carey/Shutterstock) We think of mass extinctions as brief moments of havoc — profoundly devastating but over within a geologic instant. The Devonian, the second of the so-called “Big Five,” […]

Researchers warn that if we don’t act quickly, many species, including species of salmon and southern resident killer whales, are likely to be functionally extinct in the next 25 years. Credit: Fernando Lessa Co-governance model for implementing conservation management plan gives species their best chances of survival. The Fraser River […]

Of the six or more different species of early humans, all belonging to the genus Homo, only we Homo sapiens have managed to survive. Now, a study reported in the journal One Earth today (October 15, 2020) combining climate modeling and the fossil record in search of clues to what led to […]

The species is among 28 animals being assessed for potential upgrade of their threat status as their numbers plummet following sweeping bushfires. PHOTOGRAPH: GETTY IMAGES THIS STORY ORIGINALLY appeared in The Guardian and is part of the Climate Desk collaboration. The koala is being considered for official listing as endangered after the summer’s bushfire disaster […]