Stretching along a formation mission team members have named Low Ridge, lying in front of the Martian winter haven for NASA's Spirit rover, are several continuous rock layers that make up the ridge.
South Korea plans to select two astronauts from 33,000 who have applied to go into space.
An expert on oral cancers at the University of Illinois believes he has developed a means to diagnose them more precisely.
German researchers have discovered that desert ants appear to have an internal pedometer that guides them back to their nests.
A young osprey has returned to its birthplace in a wildlife sanctuary, raising hopes that the bird can be re-established in Britain.
European researchers have found that birds who migrate long distances are arriving at their summer breeding grounds earlier.