Hopes are boosted for success at the Copenhagen climate summit as it emerges more than 60 state leaders 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.
Astronaut Randolph Bresnik becomes a father in space after his wife gives birth to a daughter back home on Earth in Texas.
Researchers working on the Large Hadron Collider are delighted with the progress made since the machine restarted.
A European satellite launched to study Earth's water cycle returns its first data, confirming its novel instrument works well.
Fish reared in water acidified by CO2 may become "fatally attracted" to the smell of their predators, say scientists.
A journey to the Java home of an ancient alpha male
Smashing! Cern's particle cruncher finally restarts
The Large Hadron Collider experiment, designed to shed light on the cosmos, restarts after 14 months of repairs.
Arguments over hacked climate change e-mails
Korean model for Obama as Copenhagen looms
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.
Giraffes use a small, powerful, supercharged heart to pump blood up the neck to the head, new research reveals.
How engineers repaired the Large Hadron Collider
French researchers say they have found a way of using human embryonic stem cells to create new skin which could help serious burns victims.
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 round-the-world journey makes its first trip across a runway.
A study of mammoth dung is helping 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.
A US judge rules that negligence by army engineers led to massive flooding in part of New Orleans as Hurricane Katrina struck in 2005.
Helena Christensen documents climate change
Energy-efficient light bulbs lose on average more than a fifth of their brightness over their lifetime, a study finds.
Amazing footage of a baby ibex's perilous escape from a fox is captured on film by a BBC natural history cameraman.