Pollution

Guardians of the Tweed recruited over river health

Ban on single-use plastic cutlery comes into force

Wild salmon study aims to tackle species decline

Ulez: One month on and many unanswered questions

River pollution results shocking, campaigners say

Pollution stopping bees finding flowers - study

Campaigners plan protest over town's air pollution

Wild swimmers concerned about E. coli in rivers. Video, 00:01:39Wild swimmers concerned about E. coli in rivers

River metal pollution tackled by £9m scheme

Metal-mining pollution impacts 23 million people

Rivers help chart London's pandemic health

Get a grip on pollution rules, government told

Wye tributary pollution above target - campaigners

Calls for action after BBC News report on sewage

Student 'caught E. coli after sea sewage spill'

RSPB boss sorry for post calling ministers 'liars'

Business owner fears 'massive impact' of Ulez

Do clean-air zones like London's Ulez work?

Ulez: What does it mean for counties around London?

Air pollution fall seen in three road areas

The indigenous groups fighting the quest for 'white gold'

BBC Inside Science. What makes a healthy river? Audio, 36 minutesBBC Inside Science

London's journey to Ulez expansion