The world's going to change climatically. We just want to control the change. We want to have a high quality of life for billions of people as we pass through this era.

For me, the meaning of life is pretty clear: Living things strive to pass their genes into the future.

The debate [in Undeniable] was nominally about creationism as a "viable" explanation for what we observe around us. For my side, the debate went very well; I'm not sure what I would change, although I can imagine shortening my answers during the rebuttals, perhaps.

There are just two people entitled to refer to themselves as "we"; one is the editor and the other is the fellow with a tapeworm.

Science is the key to our future, and if you don't believe in science, then you're holding everybody back.

NASA is an engine of innovation and inspiration as well as the world's premier space exploration agency, and we are well served by politicians working to keep it that way, instead of turning it into a mere jobs program, or worse, cutting its budget.

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.