Ghosts of Evolution | It’s Okay to be Smart | PBS Digital Studios
What does a ginkgo tree have in common with a dinosaur? SUBSCRIBE, it’s FREE! http://bit.ly/iotbs_sub ↓ More below ↓ Every fall, in cities like New York, the smell of vomit fills the crisp air. The culprit? The pungent seeds of the ginkgo biloba tree.