Why is the sky dark at night? You might think the answer is obvious - the sun isn't up! But the only reason the sky looks blue during the day is that sunlight scatters off of the atmosphere -...
This has nothing to do with physics, but - Racewalking. Here are the rules: Walk so that one foot is always on the ground and keep your front leg straight. In short, do a funny walk, really fast....
On those cold, rainy days when you forget your rain jacket or umbrella and you want to stay as dry as possible… should you walk and spend more time in the rain? Or should you run, which means...