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.

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

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.

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

Don't assume that what we currently think is out there is the full story. Go after the dark matter, in whatever field you choose to explore.

The features of globalization have huge consequences on pandemics. It just connects us so much more closely... And as a consequence, every one of these viruses that passes from animals to humans has the capacity to infect all of us.

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.