BBC

An experiment with a "vending machine for crows" is revealing insights into how intelligence evolves, scientists say.

From biologically dead to a haven for wildlife. How the Thames Estuary has become a sanctuary for seals.

The Thames was once heavily polluted but seals are back and population surveys are helping guard against threats from disease and dredging.

Watch how Emma the crow creates the currency required to operate a vending machine.

Experts warn it may take years for the wildlife to fully return to the burnt area near Saddleworth Moor.

Plants share resources using an underground network called the "Wood Wide Web".

British scientists discover a way of taking human fingerprints off seized pangolin scales.

Without action on climate change, the coming generation will pay much more to curb emissions, a UK report says.

The bird, tagged as number 492, is seen near Lavaca Bay, Texas, after fleeing a Kansas zoo in 2005.

'Oumuamua's shifting identity may reveal details about other solar systems.

Researchers have found complex molecules in the ocean of Enceladus, only previously known on Earth and in meteorites.

The space telescope that will follow the Hubble observatory suffers another delay in preparations.

The volcano on Isabela Island is spewing lava from fissures which opened after two strong earthquakes.

A Japanese spacecraft has arrived at a diamond-shaped asteroid where it will collect rock samples.

A university campus has cut the use of disposable cups with a simple change.

A new study says that alternatives to palm oil could make matters worse for endangered species.

The strange weather phenomenon was spotted in Powys, as temperatures soared across Wales.

The Commons votes in favour of controversial plans for a third runway by 415 votes to 119.

The moment the biggest satellite ever released from the space station was set free.

An all-women expedition sets out to gather scientific data on the world's largest accumulation of marine plastic.