A vast whale graveyard + Zombie sea cucumbers

Big cats used to roam the entire United States. You might know them as mountain lions, pumas, cougars, or catamounts. Though they go by many names, they're actually all the same species. Their current population is mostly confined to the West, and part of Florida, though in recen ...  Show more

When Blue Origin’s New Glenn spacecraft exploded in an enormous fireball during a ground test a couple weeks ago, it sent shockwaves not only through the air, but through NASA’s timeline for the upcoming Artemis missions. It also came at an especially bad time for Jeff Bezos’ roc ...  Show more

It’s a measure of their insanity that leaders around the world are seriously considering nuclear war. Ivana Hughes of Columbia on what that would mean. (00:00) How Powerful Are Nuclear Weapons? (09:46) What Would Happen if a Nuke Detonated Over Times Square? (24:56) Ozone Layer D ...  Show more

Since the US bombing of Japan in World War II, the world entire has remained terrified of nuclear weapons. Even as scientists and scholars spent decades warning about the existential threat posed by technology that can literally end civilization, countries across the planet raced ...  Show more

Send us Fan MailJoin Professor Jeffrey Sachs and global security expert Jon Wolfsthal to unravel the stark reality behind the Doomsday Clock - now set at a perilous 89 seconds to midnight. What does this ominous timepiece truly measure, and why has humanity never been closer to c ...  Show more

Much of our discussions about nuclear weapons focus on Oppenheimer, the Manhattan Project, or the Cold War. But what does the current nuclear age really look like? Sarah Scoles joins Heather Williams to discuss her book “Countdown” and share first hand reporting on the scientists ...  Show more