By creating an account, you acknowledge that PBS may share your information with our member stations and our respective service providers, and that you have read and understand the Privacy Policy and Terms of Use.
Become a WTTW member to enjoy
WTTW
Passport
Get extended access to 1600+ episodes, binge watch your favorite shows, and stream anytime - online
or in the PBS app.
Episode 8 | 12m 42s
| Video has closed captioning.
We talk about one of the earliest animal senses, - chemosensation -- or our sense of taste and smell. We discuss how animals use these senses to explore their environment and communicate, and how that pair of nostrils of yours is an example of convergent evolution. And, witness how some animals have the ability to sense electric and magnetic fields.