The latest stories from the Science & Environment section of the BBC News web site.
Updated: 12 min 29 sec ago
Just how dangerous is liquid nitrogen?
Your pictures of the Northern Lights over the UK
People in the northern UK are being treated to some of the best views of the Northern Lights for some time, as the cycle of solar activity reaches a high point.
Spectacular images of the Aurora Borealis are captured by stargazers on Ballaugh beach on the west coast of the Isle of Man.
The Austrian skydiver Felix Baumgartner will try to become the first human to break the sound barrier unaided by a vehicle when he jumps out of a balloon high over the New Mexico desert.