You can't make something out of nothing. This is because there are certain ...More
Dynamite is highly explosive. This is because it's a chemical reaction wait...More
If you've worn headphones, watched TV, worked on a computer, or ridden in a...More
Playing Tug-of-War, pedaling a bike, jumping rope - these actions all requi...More
During the 20th century, many things were invented that made people's lives...More
In 1872,Yellowstone became the first national park. Now,there are 59 nation...More
Sound waves are all around us creating a multitude of different frequencies...More
Light heats our skin, helps us see in the dark, and even helps cure cancer....More
