When Endless Thread producer Nora Saks learned that a "toxic, self-cloning worm that poops out of its mouth" was invading Maine, she started sounding the alarm about the impending eco-doom.

Until, that is, state experts clued her into the "real threat" : A different creepy crawly wriggling towards The Pine Tree State's gardens and precious forests, and fast. In this rebroadcast from January 2023, Endless Thread tunnels down a wormhole, encountering a long history of xenophobic rhetoric about so-called invasive species, and some hard truths about the field of invasion biology itself.

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