From killer grass to flesh-eating worms: The invasion beneath your feet

April 21, 2025

What do a colonising plant and a carnivorous worm have in common? Both come from South America and threaten our ecosystems. They are among invasive exotic species that have contributed to nearly half the world’s animal and plant extinctions. In southwestern France, locals, scientists and officials are trying to stop the invasion. The Down to Earth team reports.

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