Rapid fentanyl tolerance is now outpacing standard addiction treatments — with lethal implications. Regular Users Can Tolerate Previously ‘Unsurvivable’ Amounts of Fentanyl. New research from Los Ange…

A synthetic cell with most of life’s hallmarks raises urgent questions about what “alive” actually means. Scientists Made a Cell With Most of the Hallmarks of Life. Here’s What to Know. SpudCell, the…

The NIH has assembled the world’s largest integrated health database, pairing half a million genomes with clinical records and wearable data. N.I.H. Announces World’s Largest Integrated Health Databas…

Europe’s record heat wave has now killed at least 1,000 people in France alone, and rapid-attribution science confirms the event was impossible without climate change.

Europe’s heat wave is now confirmed impossible without climate change — and France just recorded 1,000 excess deaths. Is Climate Change Fueling Europe’s Heat Wave? Yes, Researchers Say. A rapid-attrib…

Europe’s record-breaking heat is now confirmed as impossible without climate change, and it is stress-testing infrastructure built for a cooler world. Is Climate Change Fueling Europe’s Heat Wave? Yes…

Rapid attribution science confirms Europe’s record heat would have been impossible without climate change. Is Climate Change Fueling Europe’s Heat Wave? Yes, Researchers Say. The World Weather Attribu…

Europe’s record-breaking heat wave has been formally attributed to climate change, with researchers saying it would have been “not have been possible” without global warming. Is Climate Change Fueling…

Europe’s record-breaking heat is now a scientific puzzle about upper limits, not just a weather event. Why Europe Is the Fastest-Warming Continent — Local factors like reduced Atlantic cooling and lan…

France has confirmed its first Ebola case, a doctor returning from Congo, as the current outbreak shows unusually mild symptoms that complicate containment.