Why don't bicycles fall over?

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 ...  عرض المزيد

Why are brothers and sisters so annoying? Why do siblings often look a lot alike? Why do siblings fight? Can your sister be your best friend? Why do we fight with our siblings even if we love them? But Why takes a look at the sibling relationship with Susan Dominus, author of The ...  عرض المزيد

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 ...  عرض المزيد

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 ...  عرض المزيد