From population to plants, your questions answered about climate change.

How much more efficiency can be wrung out of the jet engine - technology which is over 70 years old?

Conservationists mapped the most critical areas of Scotland for endangered birds like the kittiwake.

UK panel will tackle some of the dilemmas around global warming.

"...the ones causing the most damage are loose groups of individuals who come together to do one thing, do it really well... then disappear."

Physicists have put a limit on the warmth—and therefore the mass—of dark matter, the mysterious substance that makes up about a quarter of our universe.

The size of the brain's hippocampus doesn't always matter for memory in older adults. New research clarifies why.

Infants who spend less time moving in their first year may have greater risk of obesity later. "Even in infancy it's important for children to move freely."

"The basic records being kept are annual reports on the number of deaths from drug overdose. But that's only part of the picture."

Satellites continue to monitor the Philippines volcano which has experienced a lull in activity.