The level for the most damaging tiny particles is halved, reflecting new evidence of deadly harm.

Air pollution kills more people than malaria, HIV/AIDS, and TB combined but receives only one per cent of development aid.

Analysis shows the future is bleak for the fossil fuel industry with trillions of dollars of assets at stake.

A study involving 13,000 people in London found that a relatively small increase in exposure to nitrogen dioxide led to a 32 per cent increase in the risk of needing community-based treatment.

Polystyrene cups will also be banned, but campaigners say action to cut plastic waste is "snail-paced."

The precipitation was so unexpected, scientists had no gauges to measure it, and is a stark sign of climate crisis.

Home deliveries are soaring and cargo bikes cut congestion and pollution in cities, researchers say.

Production of chemical could help make recycling more attractive and tackle global plastic pollution.

Falling oxygen levels harming already struggling wildlife and drinking water supplies, say scientists.

The focus of world leaders on responding to future outbreaks overlooks the far cheaper and more effective strategy of stopping the spillover of disease from animals to humans in the first place, scientists warn.