Once alleged to have been introduced by a Nazi commander, the true story of Germany's raccoons is divisive and often wildly misunderstood.
Nurdles, historic artifacts and unhappy residents. Try your hand at our North East and Cumbria quiz.
The Tees Rivers Trust hopes to tackle invasive plant species and replace them with native flora.
Spotted lanternflies are an invasive pest and a multimillion-dollar disaster for the US's wine industry. Meet the good boys and girls of the resistance.
More than 200 Asian hornet queens have been caught and nine nests destroyed so far this year.
Two volunteers at Holywell Dene pull out Himalayan balsam plants on the riverbank.
The race is on to stop the mink in Dorking, which can each kill up to 500 animals every year.
River Perry Water Watch, based in Baschurch, is pulling up the invasive plant from their riverbanks degrades them and damages biodiversity.
Scientists will spend the next three years looking at the best, environmentally-friendly, ways to deal with the pest.
