BBC News - Science & Environment
Updated: 11 min 23 sec ago
Governor Jerry Brown signs legislation committing California to carbon-free electricity by 2045.
Hundreds of hydropower projects threaten to harm Bosnia's rivers, protesters say.
Antonio Guterres calls for leadership to break the paralysis on the "defining issue" of our time.
A satellite system that for 30 years has tracked animals will expand to track all manner of objects.
A wildlife trafficking watchdog says it has found hundreds of examples of animal trading.
The World Meteorological Organisation says there's a 70% chance of a weak El Niño event by the end of this year.
It's come close to cancellation several times, but could the successor to the Hubble telescope make the greatest ever discovery?
The ambitious project aims to tackle a collection of waste known as the Great Garbage Patch.
Investigations are under way to determine why large numbers of whales are dying off Scotland and Ireland.
Japan is trying to convince the world the time has come to make commercial whaling legal again.
Huge installations of wind turbines and solar panels would boost rainfall and vegetation in desert areas.
The British-built Aeolus satellite begins firing its laser down on Earth to map the planet's winds.
Scientists show how searching social media messages can reveal useful data on animal behaviour.
One of the UK's leading female scientists donates her £2.3m science prize to help more women, ethnic minority and refugee students to become physics researchers.
An activist hopes to pick up a million cigarette butts from his local beaches to draw attention to the plastic they contain.
Russian officials now say a hole in a spacecraft docked at the space station was caused by a drill.
A year after breaking away from Antarctica, the world's biggest iceberg is finally on the move.
Some species of plant have evolved to take up metals like nickel and iron, without being poisoned.
The room has been transformed in honour of pioneering palaeontologist Mary Anning.
The nation is united behind drought-hit farmers, but some query the merits of "special treatment".