Many men tried to claim the invention of anesthesia as their own. It didn't work out well for any of... more

What does every wild west shootout in every movie you've ever seen have to do with the history of anesthesia?... more

The war between humanity and its oldest, archest of enemies: pain. Get 50% off by navigating to factormeals.com/constant50 Check out: indeed.com/theconstant now to start... more

He was the most beautiful man in the history of Athens. And he nearly destroyed it. Check out: indeed.com/theconstant now to start hiring Visit our Patreon... more

Until recently, our understanding of where babies came from was hazy. Which made it easy for a certain class of... more

We're remaking one of the all-time classic Constant episodes, this time with decent audio! Check out: indeed.com/theconstant now to start hiring Visit our Patreon here. You... more

Did a woman secretly manage to become pope, only to be revealed by a badly mistimed labor in the streets... more

Did a cross-dressing woman manage to worm her way into the papacy, and was she discovered when she gave birth... more

Find Historical Blindness at https://www.historicalblindness.com/ or wherever you listen to this podcast. We'll be back with a new year of... more

They celebrate the season a little differently down at The British Medical Journal. This episode is sponsored by BetterHelp. Give online... more

The James R. Thompson Center is the most hated building in the city of Chicago. And it has to be... more

We can go deeper. This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/theconstant and get on your way to... more

This week, we're going deep. How deep? No one knows! Check out: indeed.com/theconstant now to start hiring Get 15% off your MasterClass subscription by... more

A beastly history of the beasts that stalked Europe for centuries. This episode is sponsored by BetterHelp. Give online therapy a... more

In which a psychic horse causes the greatest crisis in scientific history. Check out: indeed.com/theconstant now to start hiring Want a month trial of... more

The Baynard Mausoleum is the oldest surviving structure on Hilton Head Island, but eerily, the family once interred inside is... more

In which a talking, psychic horse gives JB Rhine the idea for a new field of science: parapsychology. Thanks HelloFresh! Go... more

A horse is a horse, unless, of course, that horse can tell the future. Thanks HelloFresh! Go to HelloFresh.com/50constant and use code 50constant... more

Early episodes of this show sound like crap! So this week we're remaking a couple of old favorites. Thanks HelloFresh! Go... more

In 1900, three lighthouse keepers went missing, starting a phony mystery that long concealed a real one. Go to drinkAG1.com/constant to... more

There's a party in 14th Century Europe, and everybody's invited! Thanks HelloFresh! Go to HelloFresh.com/constant50 and use code constant50 for 50%... more

What's that out there in the distance? A fish? A whale? A SEA SERPENT?! No, it's just the conclusion to... more

Murder! Monsters! Lifeboats! This one's got it all. Go to drinkAG1.com/constant to get a FREE 1-year supply of immune-supporting Vitamin D... more

Buckle up your crazy belts, 'cuz we're going off the rails on a crazy train to crazy town! Thanks Athletic Greens.... more

In 2004, three men were arrested in London. Their crime was attempting to purchase material to build a nuclear bomb.... more

This is The Tale of Lord Timothy Dexter: The Luckiest Asshole in History. This episode is sponsored by BetterHelp. Give online... more

On the morning of May 8th, 1902, Ludgar Sylbaris awoke in jail alone. And then the world ended. This episode is... more

The special spring break surprise is here! Join Heather for a journey into the sad side of the happiest place... more

Watch yourself: the wars only get stupider from here. Want a month trial of Shopify for just a dollar? Grab it here! Visit www.omahasteaks.com and... more

At its best, war is terrible, wasteful, regrettable and necessary. At its worst, it's just fucking stupid. Check out: indeed.com/theconstant now to start... more