The latest stories from the Science & Environment section of the BBC News web site.
Updated: 7 min 45 sec ago
Swiss adventurer Andre Borschberg breaks the record for the longest ever non-stop solo-flight without refuelling, as his solar-powered plane continues to reach across the Pacific.
Researchers use "mind games" to reveal clues about how brain cells change when making new memories.
A dolphin jumps into a boat off the coast of southern California, hitting a woman and breaking both of her ankles.
Forensic researchers develop a new method for establishing an accurate time of death after as much as 10 days.
A 68-year-old man is badly injured by a shark in North Carolina in the seventh attack off the state's coast in less than three weeks.
The comet being studied by Europe’s Rosetta probe is riddled with pits that formed much like sinkholes here on Earth, say scientists.
The American New Horizons spacecraft makes its last planned targeting manoeuvre as it bears down on Pluto.
A deadly disease of citrus plants spreads by manipulating its insect host, research suggests.
Johann-Dietrich Woerner moves from the German space agency to head up the European Space Agency.
US physicist Eli Yablonovitch, who first created "photonic crystals" to repel, trap and steer light, will receive the Newton Medal from the UK's Institute of Physics.
Midnight came later on Tuesday as for the first time in three years an extra second was added to the official time set by atomic clocks.
'Circademics' get serious about the circus
A solar-powered plane that is attempting to cross the Pacific Ocean is encountering its first weather front.
A solar powered plane is encountering its first weather front during its attempt to cross the Pacific Ocean.
A bird can communicate by rearranging sounds into calls that convey meaning in the same way that humans use language, say scientists.
Midnight will come later tonight, as for the first time in three years, an extra second is added to the official time set by atomic clocks.
China - the world's largest emitter of greenhouse gases - has announced details of its climate action plan.
The UK must take urgent action to prepare for the impacts of climate change in the UK, according to a report submitted to the government.
China is set to reveal how much it will cut carbon emissions by beyond 2020, says Premier Li Keqiang during a visit to Europe.
Italian astronaut Samantha Cristoforetti on life in space