From womb lining to joint cushion
The one tissue that rebuilds itself every month turned out to have something to say to the one that never does. Krystelle Dsouza In fifth grade, 10-year-old Ilona decided she…
When the dead disagree
Novilara’s graves say one thing. Its bones, another. Zita Laffranchi, Marco Milella and their colleagues have spent 13 years learning to live with that
Black holes: In the forbidden zone
Physics says stars should not be able to make black holes beyond a certain mass. Fabio Antonini thinks he knows how that still happens
Cleaning and cooling: yawning’s possible purpose
New evidence says you don’t wait to exhale as your yawns chill and flush the brain
The Most Famous Human Lie Detector
Haunted by the death of his mother, Paul Ekman was driven to become the world's premier expert on emotions. Here is his life story