The world's spiders consume between 400 million and 800 million tonnes of primarily insect prey every year, say scientists.

Soft drinks makers admit more needs to be done to stop people discarding single-use plastic bottles.

Scientists on both sides of the Atlantic have become embroiled in a war of words over energy from trees.

Access to flower-rich habitats is key to the survival of wild bumblebees, say ecologists.

A deadly haze of air pollution over China in 2013 has been linked to the melting of Arctic sea ice.