Concern voiced on rover rock data
The device used by Nasa's rovers to study minerals on Mars could deliver
confusing results, complicating the search for signs of water, experts say.
New form of matter created in lab
A new form of matter - only the sixth ever seen - has been made in the lab and
it could provide a new way to generate electricity.
Frying pan fumes 'kill canaries'
Cancer-causing chemicals in non-stick frying pans are killing pet birds and
contaminating people, environmentalists say.