Hydrogen-powered train makes UK maiden journey

The Hydroflex made a 25-mile round-trip in Warwickshire, reaching speeds of up to 50 mph. …

Zimbabwe: Elephants die from 'bacterial disease'

More than 30 elephants were found lying on their stomachs, according to wildlife officials. …

Rio Tinto: Mining giant accused of poisoning rivers in Papua New Guinea

More than 150 people in Bougainville have filed a complaint against the embattled Rio Tinto company. …

Buried lakes of liquid water discovered on Mars

The underground lakes were detected in the Red Planet’s south polar region. Click here…

Anger as Brazil revokes mangrove protection regulations

Environmental groups have called the move to revoke regulations that protect mangroves a “crime”. …

The water-saving device wasting billions of litres every week

Low flush toilets often waste more water than they save due to poor engineering and confusing…

Sir David Attenborough warns world leaders over extinction crisis

The naturalist uses a UN event to call on world leaders to do more to protect…

Maple trees offer most protection from harmful UV

A species of maple tree gives the best protection from damaging sunlight, a study suggests. …

Boris Johnson promises to protect 30% of UK's land by 2030

Countries must act now to reverse biodiversity loss, Boris Johnson will tell a UN event later. …

Brain-eating microbe: US city warned over water supply

People in Lake Jackson, Texas, are urged to take precautionary measures amid contamination concerns. …