Britain on Wednesday announced plans for consumers to pay a deposit on plastic bottles as part of a broader push to tackle pollution.

The Canadian province of British Columbia vowed Monday to press on with a legal battle against a controversial oil pipeline after a federal court dealt the province a setback.

Authorities in British Columbia oppose the government's decision to let the American firm Kinder Morgan increase the capacity of the Trans Mountain pipeline from 300,000 to 800,000 barrels per day.

Land degradation will unleash a mass migration of at least 50 million people by 2050 -- as many as 700 million unless humans stop depleting the life-giving resource, dozens of scientists warned Monday.

A pinch of powdered chimpanzee bone, some gecko saliva, a dash of vulture brain.

The Sydney Opera House and Harbour Bridge went dark for an hour Saturday to kick off a global campaign raising awareness about the impacts of climate change.

Humanity is risking its own well-being by over-harvesting and harming Nature's bounty, said a comprehensive survey Friday that warned animal and plant species were in decline in every world region.

Harmful carbon emissions from energy rose in 2017 for the first time in three years, the International Energy Agency said Thursday, proof that the world's efforts to fight climate change are falling short.

Australia recommended opening more of its marine parks, including near the Great Barrier Reef, to commercial fishing Wednesday in a decision slammed as the worst downgrading of a protected area in the world.

More of a giant France-sized glacier in Antarctica is floating on the ocean than previously thought, scientists said Tuesday, raising fears it could melt faster as the climate warms and have a dramatic impact on rising sea-levels.

Governments should focus on "greener" policies to improve the supply and quality of water as climate change and a growing global population threaten the water security of billions, the United Nations said on Monday.