Why don't bicycles fall over?

Why is there traffic? How do traffic lights work? How do they know when to turn red and green? Why does green mean go and red mean stop? Why are cars able to go faster than they are allowed to go with the speed limit? Why do we drive on the right side of the road in the United St ...  Show more

Can’t get enough of lizards? We’re back with a bonus episode answering more of your lizard questions with Adam Clause of the San Diego Natural History Museum. This week, chameleons, Komodo dragons, iguanas, monitor lizards and tuatara! How do chameleons change color? Why are Komo ...  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

Are bicycles suitable for all ages? What are the benefits of riding a bicycle for a child? What are some of the world's countries with the bike-friendliest cultures? Tune in and have a great day! - IELTS Speaking for Success PREMIUM: https://linktr.ee/sfspremium Transcript: h ...  Show more