Getting amputated limbs to grow back
Ken Muneoka spent three decades asking why mammals cannot regrow the limbs they lose, while all that time his own lungs were quietly filling with scars
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 Read this story in a shorter version,…
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