Emily Tilling witnessed a 'complete kill' - a pollution spill so toxic that it wiped out all the fish and almost all the insects and other invertebrates along three miles of the River Llynfi in mid-Wales.
Oysters in a Welsh river could see their numbers rise to 10,000, thanks to an "oyster maternity ward".
Shoppers' use of plastic carrier bags in England has continued to fall – by 59% in the last year alone – since the introduction of the 5p charge, according to recent figures.
A licence for the extraction of fossil fuels in Wales has been refused by the Welsh government for the first time.
Plastic straws, cutlery and polystyrene food and drink containers look set to be banned in Wales under proposals from the Welsh government.
Retired trawlerman Armand Toms runs his finger along a knee-high mark on the diesel tanks used to refill the 50 or so fishing and tripping boats moored in Looe's harbour in south-east Cornwall.
Researchers find people's exposure to PFAS and certain flame retardants could be significantly reduced by opting for healthier building materials and furniture.
Fish exposed to harmful contaminants can pass on health issues such as reproductive problems to future generations that had no direct exposure.
An expanding wood pellet market in the Southeast has fallen short of climate and job goals—instead bringing air pollution, noise and reduced biodiversity in majority Black communities.
Hunter-donated meat provides crucial protein to US food banks. But an EHN investigation found a lack of oversight that could result in potentially hundreds of thousands of lead-contaminated meals this year.