The US will give a target for reducing greenhouse gas emissions at next month's UN climate summit, officials say.
The UK team aiming to smash its own land speed record by driving a car beyond 1,000mph settles on a final design for the vehicle.
The Cassini mission completes a flyby of Saturn's moon Enceladus, sending back data and stunning images of the rippling terrain.
Children should be allowed to get dirty, according to scientists who say being too clean can impair the skin's ability to heal.
Grandmother macaques care for their abandoned grandchildren, behaviour not recorded before in non-human primates.
Hopes are boosted for success at the Copenhagen climate summit as it emerges more than 60 heads of state are expected to attend.
The massive and apparently stable East Antarctic ice sheet is losing mass, a new study suggests.
The USSR's first civilian cosmonaut, Konstantin Feoktistov, a crew member of the 1964 Voskhod spaceship, dies.
Researchers working on the Large Hadron Collider are delighted with the progress made since the machine restarted.
A European satellite launched to study the Earth's water cycle returns its first data, confirming its novel instrument is working well.
Fish reared in water acidified by CO2 may become "fatally attracted" to the smell of their predators, say scientists.
The Large Hadron Collider experiment, designed to shed light on the cosmos, restarts after 14 months of repairs.
The e-mail system of one of the world's leading climate research units has been breached by hackers.
Two of the longest-serving instruments from the Hubble telescope have taken up residence in a museum in the US.
French researchers say they have found a way of using human embryonic stem cells to create new skin which could help serious burns victims.
A study of mammoth dung has helped unravel the mystery of what caused the great mammals to die out.
The Large Hadron Collider (LHC) could be re-started in the early hours of Saturday morning at the earliest, officials have said.
Two astronauts from the space shuttle Atlantis have embarked on the first spacewalk of their mission.
The prototype of a solar-powered plane destined for a record attempt is set to make its first trip across a runway.
Energy-efficient light bulbs lose on average more than a fifth of their brightness over their lifetime, a study finds.