About 20 percent of the genetic information in your nose doesn't match anything that we've ever seen before.

Many people on our planet right now despair; they think we’ve reached a point where we’ve discovered most of the things. I’m going tell you right now: Please don’t despair.

We may have charted all the continents on the planet, and we may have discovered all the mammals, but that doesn't mean that there's nothing left to explore on Earth.

The world can now maintain an acute infection in a way that is unprecedented in the history of life on our planet.

About 20 percent of the genetic information in your nose doesn't match anything that we've ever seen before.

If an alien visited Earth, they would take some note of humans, but probably spend most of their time trying to understand the dominant form of life on our planet - microorganisms like bacteria and viruses.

If you find diseases before they've really emerged, you can control them early on, before you get a major epidemic.