The theory of evolution was not formally published until shortly before Faraday's death. Evolution was yet to be discovered during Faraday's life. Also, I don't think that Michael Faraday would claim that the Earth is extraordinarily young.

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.

If NASA is to reach beyond the Moon and someday reach Mars, it must be relieved of the burden of launching people and cargo to low earth orbit. To do that, we must invest more in commercial spaceflight.

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

The most serious problem facing humankind is climate change.

America has had many other discoverers besides Columbus, but he seems to have made more satisfactory arrangements with the historians than any of the others.

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.