Physicists have finally solved the problem of how pearls form almost-perfect spheres: they rotate as they grow.
Nobody has been able to trap electromagnetic waves inside a metamaterial and then release them again. Until now.
Brazil nuts would rise to the top of a container of mixed nuts on Mars and the Moon, but more slowly than on Earth, say physicists
Algae-like structures inside a Sri Lankan meteorite are clear evidence of panspermia, the idea that life exists throughout the universe, say astrobiologists.
An impressive video shows a strand of material that folds itself into prescribed shape underwater. The inventor explains how the underlying idea could be useful.
3-D printing technology is evolving quickly, but not that quickly.
The very affordable pen could open new vistas for 3-D creation.
Neural implants are set to be revolutionised by a new type of graphene transistor with a liquid gate, say bio-engineers
How good an idea is a “now you feel it, now you don’t” keyboard?