When Mount Vesuvius blew up in A.D. 79, ash, cinders, and stones buried a great city below the mountain. Volcanoes are dramatic and powerful. There are thousands of them all over the earth. Franklyn
Look around to see what uses oil—cars, airplanes, boats, factories, and countless other machines. The world is dependent on oil as its main source of energy. Although oil is plentiful right no
Have you ever wanted to take the same steps as a dinosaur or see how your foot compares to that of a Tyrannosaurus rex? Amazingly, the tracks or footprints of dinosaurs that walked on the earth millio
The rainforest is home to millions of plant and animal species. The inhabitants of the rainforest depend on each other and they all depend on rain. How much rain falls in a rainforest? How do scientis
