After four weeks of using the cream, participants lowered the biological age of their skin by about two years on average.
Solar geoengineering could buy humanity time against climate change—or trigger a dangerous new arms race. A first-of-its-kind simulation offered a glimpse of what happens when geopolitics takes the wheel.
Here’s what we know about the record-setting El Niño on a record-hot planet, and the most important questions scientists are trying to answer.
Redwoods adapted to a cool, foggy climate. Now a new study shows they slow down photosynthesis when their environment warms.
The new image isn’t just stunning—it may also provide clues about how this star survived its own explosion.