# ‘Everything is quagga mussel now’: can invasive species be stopped?

An episode of [Science Weekly](https://invisiblenetwork.ai/podcast/136697669), 5 Feb 2026, 16 min.

Audio: https://flex.acast.com/audio.guim.co.uk/2026/02/04-82521-gnl.sci.20260204.eb.quagga_mussel.mp3

On a recent trip to Lake Geneva in Switzerland, biodiversity reporter Phoebe Weston witnessed the impact of one of the planet’s most potent invasive species, the quagga mussel. In just a decade the mollusc, originally from the Ponto-Caspian region of the Black Sea, has caused irreversible change beneath the surface of the picturesque lake. While ecologists believe invasive species play a major role in more than 60% of plant and animal extinctions, stopping them in their tracks is almost impossible. Phoebe tells Madeleine Finlay how invasive species spread, how conservationists are trying combat them and why some think a radical new approach is needed.. Help support our independent journalism at theguardian.com/sciencepod

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