OK, it's not a literal highway, but the Cocos-Galapagos Swimway is a proposed safety zone for sea turtles and other animals to migrate. Learn more in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/earth/oceanography/cocos-galapagos-superhighway.htm

Could the Bird Flu Cause a Human Pandemic?
14:57

Where Do Butternut Squash Come From?
10:07

How Did the Great Stink of London Work?
12:10