Alien earthworms have spread to almost all parts of North America

Invasive worms, considered a major threat to native ecosystems, have been found in 97 per cent of areas for which there are records in North America

Alien earthworms have spread to almost all parts of North America
Invasive worms, considered a major threat to native ecosystems, have been found in 97 per cent of areas for which there are records in North America