The wild horses at Assateague Island National Seashore in Maryland are very popular, but they’re also an invasive species. We find out how park rangers are giving people a chance to see the horses while also protecting the native plants and animals FROM the horses.

What is a generation and why do we have them?
28:02

Why doesn’t stomach acid burn right through us?
28:51

Can a spider eat a wasp?
30:24