BBC

The spending watchdog says the costs remain too high and public awareness of the technology remains low.

An expert says the latest flare-up on Iceland's Reykjanes Peninsula is the most powerful so far.

Could a daring experiment help our planet or is it a dangerous distraction?

The monster fruit is the size of a ping-pong ball and weighs 20.4g, about 10 times the average blueberry.

England's fastest-declining mammal is to be protected as part of a new habitats restoration fund.

The world's most powerful rocket makes a huge leap in progress in its third test flight.

The world's most powerful rocket makes a huge leap in progress in its third test flight.

The world's most powerful rocket makes a huge leap in progress in its third test flight.

The Herts and Middlesex Wildlife Trust says the scourge of gardeners are "nature's clean-up crew".

A study of whales sheds light on the evolutionary puzzle of the menopause.

A survey of giant redwoods growing in the UK reveals the trees are doing well - and growing fast.

A warming climate and fast-spreading diseases threaten supplies and push up prices, a top banana industry expert warns.

Critics say a commitment to build new gas-fired power stations would threaten climate pledges.

The first avian influenza cases in the penguins of South Georgia are reported by scientists.

BBC News is shown the secret site protecting the remains of the Sycamore Gap tree felled last year.

Warmer seas and greater reliance on technology are linked to hundreds of millions of farmed salmon deaths.

The tree fossils dating back 390 million years were found near a Butlin's holiday camp in Somerset.

It's the ninth month of global temperature records in a row, driven by climate change and El Niño.

It's the ninth month of global temperature records in a row, driven by climate change and El Niño.

It's the ninth month of global temperature records in a row, driven by climate change and El Niño.