The UK military will soon develop a new laser weapon.
Rising temperatures are affecting the size of reindeer.
Psychotic symptoms could be caused by antibodies that attack cells in the brain.
Caesarean births are affecting how our bodies evolve because more women survive childbirth.
Arctic sea ice isn't building up as fast as it normally does at this time of year.
The massive decline in coral on the Great Barrier Reef in 2016 is the worst ever recorded.
Scientists have found that predatory bacteria could be used to combat food poisoning.
There may be an ocean hidden under Pluto's heart-shaped icecap.
Molecules found on people's mobiles reveal information about the owner's lifestyle.
Scientists have made paralysed monkeys walk again using an electronic brain implant.