Why Do River Deltas Form?
A river winding its way down to the sea, from its mountain source, will inevitably choose the lowest land through which to flow. By…
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Speed
How Do Vertical Wind Tunnels Work?
The invention of large machines called vertical wind tunnels launched an entirely new sport: indoor skydiving! After donning a jumpsuit, goggles, a helmet, and…
When Was the First Solo Transatlantic Flight?
The first solo flight across the Atlantic was made on May 20-21, 1927, by an American, Charles A. Lindbergh. He flew from Long Island, New Y
When We Light Fire in a Furnace Why Does Smoke Go up the Chimney?
Your chimney–and the flue that lines it–adds architectural interest to your home, but its’ real function is to carry dangerous flue g
What Makes a Boomerang Come Back?
It is the built-in skew or twist in a boomerang combined with its spinning motion that makes it return to the thrower. At first people belie