BBC News

As the US rejoins the Paris accord on Friday, we look at how much extreme weather events are costing the country.

A retired police officer found the rare silver and gold jewellery, which has been declared treasure.

From dressing properly, to keeping warm in power cuts, to signalling for help when stranded.

A report examines the potential of materials that can change shape, adapt and repair themselves.

Nasa's Perseverance rover is aiming for Jezero Crater, considered “too dangerous” for previous spacecraft.

The government hopes to claw back money from a £1.5bn fund to promote home insulation.

Scientists use AI to tackle the puzzle of where a new coronavirus could emerge.

The shark population off Congo-Brazzaville is threatened as desperate fishermen search deeper waters.

Himalayan songbirds in colder, more elevated environments have feathers with more fluffy down.

Freezing temperatures have been recorded across the usually hot southern US state.

Solving global warming would be “the most amazing thing humanity has done”, says the billionaire.

As artificial intelligence systems get more prevalent, some of us already have computers as managers.

Take a flight along phase one of the high-speed rail network – from London to Birmingham.

The Perseverance rover could not be more aptly named, says Nasa science chief Thomas Zurbuchen.

Barely a single great white shark has been spotted off the city's coast for two years, where once there were hundreds.

A project in Edinburgh is aiming to boost numbers after a drastic decline in the bird's population.

The instrument takes images of dust storms, frost deposits and minerals on the Red Planet's surface.

The mathematicians who worked behind the scenes on the American space programme.

Rules for those arriving into England from "red list" countries differ from those enforced Down Under.

It follows a legal challenge from campaigners, who argue the policy does not fit with climate targets.

The test is first step towards all-paper bottle that can withstand pressure from fizzy drinks.

The £150m scheme to redevelop the airport has come under fire from climate change campaigners.

From microscopic observations to images showing climate change in action.

Archaeologists now believe the stone circle stood 150 miles from its current location in Wiltshire.

These extraordinary fish, which are a type of ray, are vanishing in many countries due to overfishing.

There is much excitement about the prospect of making hydrogen on offshore windfarms. Could it work?

They are thought to be formed by cars driving though puddles and spraying trees in icy conditions.

A mission to study a moon that could be home to extra-terrestrial life has been given a launch date.

The satellite images reveal miles of unregistered gold mining in Peru's Amazon rainforest, Nasa says.

Legislation needed to clear the next stage of the controversial project has passed through Parliament.

A steady decline in the levels of ozone-harming CFCs in the atmosphere has resumed, scientists say.

Six million people aged over 65 in England are at high risk of lung damage, a new report says.

Illegally brought to Colombia by drug baron Pablo Escobar, the animals have become a major headache.

The rising value of Bitcoin leads to ever-higher energy consumption, researchers say.

Experts say coronaviruses related to Sars-CoV-2 may be found in bats across many parts of Asia.

Councillors will reconsider the planning application in the light of climate change advice.

Changes could mean replacing gas boilers in homes and finding new ways to make steel without coal.

Blue whales may be at a bigger risk than previously thought of getting entangled in fishing nets.

The birds were found dead in southern Bolivia and there are fears they may have died from poisoning.

The Green Homes Grant system is overwhelmed by calls, the Environmental Audit Committee says.

Alok Sharma should resign unless plans for a deep coal mine in Cumbria are dropped, Lib Dems say.

China has been accused of trying to create enhanced soldiers - but is this even possible?

Will hydrogen or heat pumps be able to replace gas central heating?

The White House gives its backing to Nasa's effort to return to the Moon.

The male Brookesia nana, or nano-chameleon, was discovered on Madagascar and is the size of a seed.

Environmental groups say they are mystified No 10 has not intervened to stop the mine going ahead.

The ambitious and costly artificial island will provide energy for three million households.

Overwhelming evidence shows noise pollution from human activity is damaging the ocean, scientists say.

Astronaut Alan Shepard famously claimed he hit his ball "miles and miles and miles" on the Moon in 1971 - 50 years on modern technology reveals how far he really hit it.

A leading scientist warns Boris Johnson digging for coal undermines the UK's climate change efforts.