The latest stories from the Science & Environment section of the BBC News web site.
Updated: 19 min 53 sec ago
A new tracking study shows that young sea turtles make a concerted effort to swim in particular directions, instead of drifting with ocean currents.
Nearly 150 melon-headed whales, a species of dolphin, have become stranded on a beach in Japan.
The first new design of electricity pylon in almost 90 years has been erected at a test site in Nottinghamshire.
BBC Click's LJ Rich looks at some of the best of the week's technology news
A 90%-complete "terror bird" skeleton found in Argentina suggests these big-beaked predators had good low-frequency hearing and deep voices.
The biotech start-ups looking at ways to change the way we make food.
Acidic oceans helped fuel the biggest mass extinction in the history of life on Earth, a study says.
David Shukman looks at what could be done on air pollution beyond the annual warnings.
The skull of an adolescent tyrannosaur shows evidence of vicious combat as well as signs that the corpse was eaten by another dinosaur, possibly of the same species.
Scientists are hoping to find out more about elusive basking sharks by tagging them in waters off Cornwall.
Three new studies resolve some of the inconsistencies in our understanding of the Moon's birth, including the violent impact that started the process.
There could be up to 100 billion barrels of oil onshore beneath the South of England, says exploration firm UK Oil & Gas.
Scientists in Dallas, Texas, have excavated a 100 million-year-old dinosaur fossil discovered by five-year-old Wylie Brys while playing with his father.
Atlantic salmon numbers have fallen at an alarming rate despite best efforts of conservation
A study of blind crustaceans living in deep, dark caves shows that evolution is rapidly withering the visual parts of their brain.
Engineers unveil a flexible aluminium battery which they say could offer a cheap, fast-charging and safe alternative to current designs.
What is it like to climb Everest?
The iconic name Brontosaurus, which was once used to describe a titanic family of dinosaurs, is being revived after it was killed off more than a century ago.
How will California enforce its strict water rules?
The BBC's Sanjoy Majumder reports from Delhi, considered by the World Health Organization to be the most polluted city in the world last year.