Why Do Your Pupils Get Larger When You're On Drugs?

Normally, our pupils dilate in response to changing light; as it gets darker, our pupils get larger. But they expand in size for other reasons as well, including when we're sexually aroused and when we're performing complex cognitive tasks. But it's also known that certain medications — including illicit drugs — can… » 9/29/14 11:20am Monday 11:20am

Have Humans Already Conquered The Threat Of Extinction?

The Great Filter theory suggests that all advanced civilizations eventually destroy themselves before acquiring the capacity to colonize space — a notion that could explain why we've never been visited by aliens. But there may be another reason for the celestial silence. Yes, the Great Filter exists, but we've… » 9/01/14 11:00am 9/01/14 11:00am

Scientists Have Confirmed the Heaviest Metal Ever Observed: Ununseptium

An international team of researchers has just published a paper confirming the existence of element number 117—ununseptium. It's the heaviest element ever created, with an atom of ununseptium outweighing an atom of lead by 40 percent. Make some room on your periodic table, there's a new metal in town. » 5/03/14 4:13pm 5/03/14 4:13pm

Is it really worth having your gut bacteria tested?

How much can you learn about your health from a dab of poop or a swab from your skin or mouth? With various scientific researchers offering to test your microbiome for a fee, it's natural to be curious about the trillions of microbes living in your body. But is it worthwhile to get tested yourself, and what can… » 1/23/14 11:00am 1/23/14 11:00am