Burning carbon-based substances like oil, gas, and especially coal, produces billions of tons of extra carbon dioxide each year. Methane gas from cows and pigs and other animals on our large farms ends up in the atmosphere as well, trapping more of the sun's energy as heat.

My father was a very good Boy Scout. He was very skilled with knots, and he showed me how to tie a bow tie.

If you want grown-ups to recycle, just tell their kids the importance of recycling, and they'll be all over it.

The information you get from social media is not a substitute for academic discipline at all.

Some of the most wonderful aspects and consequences of evolution have been discovered only recently. This is in stark contrast to creationism, which offers a static view of the world, one that cannot be challenged or tested with reason. And because it cannot make predictions, it cannot lead to new discoveries, new medicines, or new ways to feed all of us.

I always liked show biz and got to make a few training films at Boeing.

Talk about science with everyone you meet. Especially talk about climate change. It needs to become a part of our everyday conversation (the way it is everywhere else in the world).