The latest stories from the Science & Environment section of the BBC News web site.
Updated: 3 hours 56 min ago
A hunter in the US tells the BBC how he shot an 800lb (360kg) "monster alligator" that was feasting on his farm's cattle.
The building is high tech but are the workers on board?
An expedition gets under way to drill into the Chicxulub Crater, the deep scar made in the Earth's surface by the asteroid that hastened the end of the dinosaurs.
Scientists say they have kept a pig heart alive in a baboon for more than two years.
Scientists may be closer to revealing the route taken by Hannibal as he crossed to Alps to attack ancient Rome.
An animal welfare charity attempts to trap a raccoon that was spotted several miles from where one was filmed in the Scottish Highlands.
A government consultation on whether to change the rules governing how contractors deal with protected species when developing sites ends this week.
Vitamin D supplements may help people with a failing heart, a study suggests.
A newly discovered 430 million-year-old creature appears to have dragged its offspring around on strings, like underwater kites.
Space transportation company Blue Origin say they have successfully launched and landed a suborbital rocket, which is capable of carrying six passengers, for the third time.
Meet the man who shoots 30,000 wallabies a year
The average English-speaker has about 50,000 words in their mind. But how do they find the right one in 600 milliseconds?
Computer science A-levels in the 1970s
She may just come from Africa
Scientists create artificial skin, made from mouse stem cells, that integrates successfully and even sprouts hairs when transplanted into another mouse.
Perfectly backlit by our star, Comet 67P was photographed in dramatic fashion this week by the Rosetta spacecraft - 260 million km from Earth.
A turtle in Seattle has undergone experimental therapy involving a hyperbaric chamber to try and treat its buoyancy disorder.
Hundreds of the most common bird species in Europe and the US are having their populations altered by climate change, according to scientists.
Wildlife officials express concern as white-nose syndrome, which has killed millions of bats in eastern US, is detected on the country's west coast.
The world's two largest carbon emitters have issued a joint statement confirming that both countries will sign the Paris Climate Agreement next month.