On April 3, 2014, Jane Goodall turned 80. The iconic blond ponytail has gone gray, but the sparkle of intelligence, sly humor, and fierce dedication still shines from her hazel eyes.

We're shaking loose viruses and dislodging them from their natural ecological limitations, places where they aren't very abundant and have competition, even within a single animal. We introduce them into a new, rich habitat called the human population, where they can flourish more abundantly and cause more trouble.

Most Americans know nothing about the African forest, and it seems to them a very scary, spooky dangerous place. I've spent a lot of time in the forests of central Africa. I know they're beautiful places that contain a lot of different kinds of creatures, including some that carry Ebola.

I was a prodigy who learned how difficult writing was only after getting published. I paid my dues later.