The latest stories from the Science & Environment section of the BBC News web site.
Updated: 15 min 37 sec ago
Zoo keepers from around the world are due to meet next month to discuss ways to save the endangered northern white rhino.
Millions of monarch butterflies have arrived in Mexico's forests as part of their annual migration from Canada and the United States.
Aerial photographs from the 1940s and 1950s are being used to probe the climate history of the Antarctic Peninsula.
Any moves to modify the concrete Los Angeles River, to return parts of it to a more natural setting or to capture water, must not compromise its flood-protection function, say scientists.
Greenpeace will co-operate with an investigation by a Peruvian court to determine responsibility for damage caused by activists at the Nazca Lines, the group's chief executive says.
A Japanese stem cell scientist at the heart of a scandal over false claims and fabricated research has resigned.
Astronauts on the International Space Station use a 3-D printer to make a wrench from instructions sent up in an email.
An amateur fossil hunter has unearthed a 7ft skeleton of a carnivorous marine reptile on a beach in south Wales.
Tracking data reveals that golden-winged warblers fled one day before the April 2014 US tornado outbreak, probably because they "heard it coming".
How local residents cope with Bangladesh oil spill
Fish are filmed more than 8,000m down in the Mariana Trench - the deepest place on Earth.
Fish have been filmed more than 8km down in the Mariana Trench - the deepest place on Earth.
Shrinking the bubbles generated by ships could counteract the impact of climate change, a study suggests.
Nasa's Orbiting Carbon Observatory produces its first global maps of carbon dioxide in Earth's atmosphere.
Fewer than half the target number of badgers were killed in this year's cull in Gloucestershire, Defra announces.
Populations of most of Britain's bat species are stable or increasing following previous years of decline, report says.
New streetlights could reduce the orange glare of older sodium lights meaning clearer conditions for drivers and stargazers.
India has successfully launched its largest rocket and an unmanned capsule which could send astronauts into space.
A link between autism and air pollution during pregnancy has been suggested by scientists.
Ice pancake formations, more commonly seen in the Antarctic, have been photographed on the River Dee in Aberdeenshire.