Invaders on the Menu
Clip: Episode 20 | 8m 2s | Video has closed captioning.
Zebra mussels and round goby invaded the Great Lakes decades ago. Since then, these non-native species have impacted the existing ecosystem. But now scientists are finding native species are benefiting in some ways from their presence.
Aired: 11/24/20
Problems Playing Video? | Closed Captioning