People diagnosed with Alzheimer’s recount memories they never want to forget.
An adorable animation explains that the key to solving insomnia may be a daily dose of philosophy.
In the 1660’s, German alchemist Hennig Brand intended to turn urine into gold. Instead he discovered phosphorus.
Time-lapse video of the Aurora Borealis and Aurora Australis, shot from the International Space Station.
We asked writers and thinkers to tell us: What were the most important events of 2015—and what were the least?
To understand everything wrong about health care in America today, look to a horrifying trend in amputation.
How nostalgia works and why social media may destroy it altogether, or restore it to its original purpose.
A conversation with Sarah Hepola, author of the bestselling Blackout, about investigating the worst kind of memories—those you never had.
Migraines, 3D magic, and an unlikely correspondence from one “incredibly stereoscopic person” to another.
A near-death experience makes this week’s International Asteroid Day a little more tricky to celebrate.
Dinosaurs haven’t been super-popular for 65 million years—it only feels that way. Fans and experts explain our obsession with dead monsters.
Calculating the probable dates for very bad things—a catastrophic solar megastorm; Seattle destroyed by earthquake—that are likely to occur.