If you're an adult and you choose not to believe in science, fine, but please don't prevent your children from learning about it and letting them draw their own conclusions.

I like to regard myself as someone who's capable of critical thought, that is to say, who can evaluate claims.

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.

Everyone, red state, blue state, everyone supports space exploration.

Whatever I learned reading 'Scientific American,' nothing can finally compete with your own observations.

Journalism should be more like science. As far as possible, facts should be verifiable. If journalists want long-term credibility for their profession, they have to go in that direction. Have more respect for readers.

A lot of comic conventions go way beyond comic books and include other parts of pop culture, like celebrities and science fiction and movies and books. So I go to them either as a celebrity, or as a fan, because I'm a big sci-fi geek.

Life is extremely resilient once it takes hold, but it requires rich chemistry, large energy sources, and stability, right from the beginning. The comparative planetology of our solar system makes it seem like those initial conditions are hard to come by.