The trials have confounded historians for centuries. Some scientists think a toxic fungus from rotten grain might be responsible. ...read more
Nanogenerators harvest energy from mechanical forces such as vibrations. Now a Chinese team has built such a generator from plant waste. ...read more
This young scientist founded a nonprofit that teaches people how to recycle water in their homes. ...read more
A bizarre look at the after-effects of beheading, which is still practiced in some parts of the world. ...read more