SCIENCE

An internal memo reinterprets the law so that only the intentional killing of animals, not collateral harm, is illegal.An internal memo reinterprets the law so that only the intentional killing of animals, not collateral harm, is illegal. Read More

The winners of this year’s Nikon Small World in Motion competition showcase the wiggly, feathery, undulating beauty of invisible life.The winners of this year’s Nikon Small World in Motion competition showcase the wiggly, feathery, undulating beauty of invisible life. Read More

Hotter than a crocodile, cooler than a chicken, T. Rex was definitely warm-blooded, according to a new study.Hotter than a crocodile, cooler than a chicken, T. Rex was definitely warm-blooded, according to a new study. Read More

An experiment with roots at M.I.T. can assess coastal erosion patterns and harness them to pile up sand instead of washing it away. More projects are planned for Boston and Miami.An experiment with roots at M.I.T. can assess coastal erosion patterns and harness them to pile up sand instead of washing it away. More projects

A new simulation suggests little red dots, unusually compact objects seen in photos from space, might be one stage in the evolution of black holes.A new simulation suggests little red dots, unusually compact objects seen in photos from space, might be one stage in the evolution of black holes. Read More

Conservationists set up a colony of white storks in southern England, touching off a debate over whether they truly belong there.Conservationists set up a colony of white storks in southern England, touching off a debate over whether they truly belong there. Read More

The studies may help reveal the causes of brain disease in people and point the way to treatments. But researchers already are calling for new ethical guidelines.The studies may help reveal the causes of brain disease in people and point the way to treatments. But researchers already are calling for new ethical guidelines. Read More

Experts say that after childbirth, intrusive thoughts are common and mostly benign. Lindsay Clancy’s story provides a disturbing exception.Experts say that after childbirth, intrusive thoughts are common and mostly benign. Lindsay Clancy’s story provides a disturbing exception. Read More

“Recursive self-improvement” is the idea that artificial intelligence could learn to build and train itself, creating exponential new progress — and risk.“Recursive self-improvement” is the idea that artificial intelligence could learn to build and train itself, creating exponential new progress — and risk. Read More

We found grace, humanity and friendship in the stories of disparate Americans hit by climate chaos.We found grace, humanity and friendship in the stories of disparate Americans hit by climate chaos. Read More