Is time real?

It's more than some half-baked question from your college days. Time and its "real"-ness are, in fact, major considerations in fields like physics and philosophy. But then, what does that question – Is time real? – even mean? Theoretical physicist Sean Carroll gets down to brass tacks on time, reality, and how we… » 10/17/13 1:08pm 10/17/13 1:08pm

How to Turn Real Science Into Great Science Fiction

Science fiction is the literature of discovery — and there are tons of great ways to come up with stories worth telling. But a lot of the most compelling stories are based on actual cutting-edge science. But how do you turn real science into science fiction? To find out, we asked hard SF writers and scientists. » 9/18/13 11:03am 9/18/13 11:03am

Why would aliens come all this way just to invade Earth?

In movies, when aliens invade our planet, they usually have a ludicrous motivation. Like, they're after our water. Or our gold. (Hint: Asteroids have gold.) Space travel is incredibly difficult and expensive — so why would aliens actually bother to come and invade us? We asked some experts for reasons that actually… » 5/02/13 1:30pm 5/02/13 1:30pm

Why quantum mechanics is the biggest embarrassment in all of modern…

It's been close to a century since we established how quantum mechanics "works," and we still don't know what it really means — and that, says cosmologist Sean Carroll in the video up top, may make QM the most embarrassing subject in all of modern physics. » 2/07/13 8:40am 2/07/13 8:40am

How to distinguish crap denialism from legitimate scientific debate

In the latest issue of Environmental Health Perspectives, science writer Wendee Holtcamp highlights the manifold differences between unreasoned denial of scientific evidence and legitimate, rational controversy and debate. Being able to distinguish between the two, she notes throughout her essay, is crucial if one is… » 8/14/12 8:15am 8/14/12 8:15am