Stuff You Should Think About

Strap in for a heart-stopping exploration of the science behind one of the world's most perilous stunts as we break down the insane physics of plunging over Niagara Falls. In this episode, we move beyond the lore of daredevils in wooden barrels to analyze the brutal reality of terminal velocity, massive water displacement, and the extreme G-forces experienced during the hundred-foot descent into the churning "Maid of the Mist" pool below. We’ll examine the fluid dynamics that make the falls a lethal hydraulic trap and explain why even the most expertly engineered protective vessels are often no match for the sheer crushing force of thousands of tons of falling water. Join us as we calculate the odds of survival and reveal the harrowing engineering truths of what really happens to a body—and a craft—caught in the grip of nature’s most powerful curtain of water.

In this episode of How It Works, we peel back the layers of superstition and history surrounding the world’s most infamous day: Friday the 13th. We journey through the origins of "paraskevidekatriaphobia," exploring how the convergence of a supposedly unlucky number and a day steeped in religious and cultural folklore created a persistent modern-day phobia. From the ancient numerical significance of the number 13 to the historical accounts of knights and biblical lore, we examine why this date continues to trigger anxiety and shape behavior across the globe. Join us as we separate historical fact from cultural fiction to understand the psychological forces that keep this eerie calendar anomaly at the forefront of the collective imagination.