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Students mark International Mother Language Day.

̽��ֱ��London Underground is polluted with ultrafine metallic particles small enough to end up in the human bloodstream, according to ̽��ֱ�� of Cambridge researchers. These particles are so small that they are likely being underestimated in surveys of pollution in the world’s oldest metro system.

How fresh-water mussels and a stretch of the River Thames connected two postgraduate scientists separated by over half a century.

Scientists replicated a 1964 River Thames survey and found that mussel numbers have declined by almost 95%, with one species – the depressed river mussel – completely gone.

Growing up on free school meals at one of the lowest performing state schools in the country, Raghib Ali went on to become a leading epidemiologist and OBE awardee. He’s determined to improve the life outcomes of children from poor backgrounds so that they too can reach their full potential.

Some estimates of Antarctica’s total contribution to sea-level rise may be over- or underestimated, after researchers detected a previously unknown source of ice loss variability.

A study of 29 European lakes has found that some naturally-occurring lake bacteria grow faster and more efficiently on the remains of plastic bags than on natural matter like leaves and twigs.

Lithium extraction from the deep sea, overfishing of deeper-water species, and the unexpected ocean impacts of wildfires on land are among 15 issues experts warn we ought to be addressing now.

Professor Bill Sutherland is leading a conservation revolution to reverse the dramatic loss of global biodiversity

How do you deal with a harmful invasive species wreaking havoc on the UK’s water pipes? You take advantage of them being fussy eaters and send them a Trojan Horse.