In this episode, we begin a three-part series on invasive species produced in partnership with the Invasive Species Centre.

We begin with context - the War of the Worlds! Then our guest reporter Trelle Kolojay tells us about water-based invasive species with the help of experts from the Invasive Species Centre. In our history of science segment, we'll travel to the recent past and previous centuries to tell the story of two special little goldfish.

Zebra & Quagga Mussels
Asian Carps
The Sea Lamprey
Goldfish
Ontario's feral goldfish population is exploding and climate change may be to blame | CBC News

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