ENVIRONMENT

Solar energy remains our cleanest and most abundant energy source.

Harvey has dumped 15 trillion gallons (56 trillion litres) of rain on the Houston area, with another five trillion gallons to come.

Rising floodwaters sends thousands of people to rooftops or higher ground.

Harvey was the biggest storm to hit Texas since Wilma in 2005.

Gasoline prices respond to possible disruption as refineries, ports and exploration sites are closed with "life-threatening" storm in sight.

Macau has been devastated by Typhoon Hato – the most powerful storm to hit the territory in half a century.

Believing in mythical creatures could be the best thing you ever did to save rare animals.

"People were just swimming, they cried for help. The water came so suddenly," said a witness.

The Indus Plain is sitting on huge reserves of arsenic-rich groundwater.

Typhoon Hato, a maximum category 10 storm, slammed into Hong Kong with winds of up to 155 kmh (95 mph).

The mysterious habitats of the deep are being destroyed before we know anything about them.

The tornado lasted about 10 minutes in China's Nenjiang County in northeastern Heilongjiang Province.

The popular Italian tourist island of Ischia off the coast of Naples was hit by an earthquake, killing at least two people and injuring dozens.

The worst monsoon floods in a decade have killed more than 800 people and displaced over a million across India, Nepal and Bangladesh.

Ten photos that brought about real change by influencing the way people think and swaying public and political opinion.

Around 400 bodies have been recovered so far, but the death toll is expected to rise as an estimated 500 are still missing.

The rise of algae triggered this major ecological transition.

Lithium is increasingly in demand with the growing popularity of electric cars.

American study shows some see acceptance of climate change as a threat to their jobs.

Queen bees struggle to reproduce after exposure to the insecticide thiamethoxam.

"We need to find more humane solutions," said a critic amid efforts to reduce the risk of bird strike.

Tremors felt as far away as Singapore, but no reports of Tsunami

Titanium suboxide isn't known to be produced by any natural processes.

The air-filtering bike from Dutch designers and cycle startup ofo could help clean up polluted cities.

This will be a part of Nasa's global network of space geodetic stations that measure the size and shape of the Earth.

When the quake hit, the performers ran off the stage in terror and the audience thought the tremor was part of the show.

A vast solar complex producing 4.5 gigawatts of energy is awaiting authorisation.

The McMurdo Dry Valleys were flooded as summer temperatures soared to 12C.

Fires in Indonesia, lit to clear forest and peatlands for plantations, cause an annual crisis that blankets large parts of southeast Asia in smog.