The latest stories from the Science & Environment section of the BBC News web site.
Updated: 2 min 38 sec ago
Millions of us routinely upload photos and other personal information onto the internet, believing it will stay safe and be easily accessible.
Ultrasound images of a baby pygmy hippopotamus kicking inside its mother's womb have been released by Melbourne Zoo.
Vint Cerf, a "father of the internet", says a way must be found to stop all our images and documents being lost through technological obsolescence.
The Bass Rock in the Firth of Forth now has the world's largest colony of gannets following a count by experts.
Why this 24-year-old wants a one-way trip
More than 30 British insect species have been classified as in danger of extinction, due to pollution and habitat loss.
The American south-west and central plains may be on course for droughts the like of which they have not seen in over a 1,000 years, scientists say.
About eight million tonnes of plastic waste find their way into the world's oceans each year, a new scientific assessment suggests.
Scientists at a US conference in say the time has come to try actively to make contact with intelligent life on other worlds.
Dogs can tell the difference between happy and angry human facial expressions, a study suggests.
Carbon dioxide escaping from the depths of the ocean heralded the end of the last Ice Age, a study suggests.
Early results from a major count of farmland birds reveal sightings of several rare species.
Making new art from old in a Nobel Prize winner's lab
Sao Paulo's water crisis hobbles Brazilian business
Dogs can tell the difference between happy and angry human facial expressions, a touch-screen study reveals.
An unmanned SpaceX Falcon 9 rocket carrying a space weather satellite successfully launches from Florida's Cape Canaveral Air Force Station on its third attempt.
The Deep Space Climate Observatory launches from Florida on a mission to monitor both the Sun and the Earth.
DNA analysis reveals frequent interbreeding between Darwin's famous Galapagos finches, and uncovers a gene linked to their different beak shapes.
A prototype for a versatile mini-spaceplane has successfully completed its first test flight, splashing down in the Pacific Ocean.
Students at a college in Bedfordshire are trying to save an type of cooking pear, which is through have been first cultivated in the 13th century.