This Weird Side Effect Nearly Torpedoed The Practice Of Anesthesia 

It's 1844, and surgeries are brutal, agonizing, and necessary slapdash. One man promises he can make it so patients feel no pain. He proves it with a patient who screams hysterically throughout a short procedure. Here's how a side effect of laughing gas nearly strangled anesthesiology in its cradle. » 12/26/14 8:00am Friday 8:00am

Why 19th Century Scientists Believed That Life Originated In Space

The Panspermia Hypothesis holds that life on our planet traces its origins to space—say, a microbe-laden meteorite landing on primordial Earth. The theory, conceived before humans even went into space, was actually born out of criticism of Charles Darwin and his perceived failure to explain how life began. » 12/23/14 8:00am Tuesday 8:00am

The Bitterest Scientific Duel in History Was Over "Geoheliocentrism"

Most people know Tycho Brahe as the silver-nose-wearing, elk-owning astronomer that they'd love to drink with. He was also an implacable grudge-holder. His bitterest fight involved three famous astronomers of the 16th century, and their battle over the best theory about how Earth was at the center of the universe. » 12/08/14 8:00am 12/08/14 8:00am

​The First Theory of Evolution Involved Fish People

Anaximander lost out to Aristotle in the running for Most Famous Ancient Greek Philosopher. That's a shame, as he may have been the first person to come up with the idea of "animals evolving from other animals." The only problem is, the spin on it he came up with involved post-puberty humans hatching from fish people. » 12/07/14 1:40pm 12/07/14 1:40pm