Why don't bicycles fall over?

Some questions are so big they’re existential, meaning that they get right to the heart of human existence. These are also sometimes called philosophical questions, so for this episode we called up a professor of philosophy, Scott Hershovitz, who teaches at the University of Mich ...  Show more

Why did the dinosaurs go extinct? Many of you have learned about the meteorite that scientists say hit the earth 66 million years ago and killed off many dinosaur species. But some dinosaurs survived, and the birds you see flying around today are their direct descendants! In this ...  Show more

Hier wird gecheckt, warum Fahrradhelme wichtig sind, welches die krasseste Tour der Welt ist und warum es so viele unterschiedliche Räder gibt.Wenn ihr coole Fahrräder sehen wollt, schaut doch mal hier rein: Von der Draisine bis zum Hightech-Flitzer, die Geschichte des Fahrrads D ...  Show more

Some cyclists train for years before hitting the track in the Olympics. Other cyclists buy a $30 bicycle and are thrown onto the gritty pavement of a Chinese city to learn from their hard knocks. One such lesson learned being: never pass on the right for risk of being spat on ...

The basic mechanics of the bike are pretty simple --- it’s basically a triangle with wheels and a chain drive to propel it forward. No batteries or engines. It seems obvious in hindsight .... And that’s why most people guess the bike was invented a long time ago. Yet the ‘runn ...

Growing up in rural Northern California, Mike Radenbaugh hated biking to high school—it was a 16 mile slog; hilly and tiring. So he scrounged up a battery and a motor, rigged them to an old mountain bike and began cycling to school without breaking a sweat. When Mike's neighbors ...  Show more