The once-wild Colorado River has been tamed. A mighty dam keeps the river from overflowing and flooding houses and farmlands. Water from the river goes to farms in three states. The river also makes...
IT’S DONE WITH MIRRORS
When a magnifying glass is held the right distance from a piece of paper, it brings the sun's rays together at one point---the burning point. The heat at this point is so great, it burns the paper. ...
PLENTY OF PEANUTS
This old photograph shows George Washington Carver (second from the right) working with students in his laboratory at Tuskegee Institute in Alabama. > Peanuts grow undergound. How can a cotton...
STEP FARMING
> Step farming in Sri Lanka. If you planted seeds on the side of a hill, what would happen to them during a heavy rainstorm? Chances are, the rainwater running down the hillside would take the dirt...
THE BIG ROCK
If you walk around a certain rock in Australia, you really go on a hike---a five-mile (8-kilometer) hike. This great rock is a mile and a half (2.4 kilometers) long and a mile (1.6 kilometers) wide....
SAVING THE DROWNING LAND
Did you ever hear the tale about the little Dutch boy who saved his land? His name was Peter and he lived in a small village in the Netherlands, or Holland. One evening, Peter saw water leaking...
WHAT GOOD ARE DIAMONDS?
If you find a blue-gray stone on the beach, it could be more than just a pretty pebble. It could be a diamond. But you'd have a better chance of finding a diamond in Africa, because that's where...
WHERE WE USE NATURE
Is there a river that runs backwards? Is there a place where people grow a plant that is a food and that can also be used to make blankets? Is there a road that's long enough to reach around the...
A SNOWLAND CALLED GREENLAND
When the Norseman, Eric the Red, discovered a large island in the Atlantic Ocean, he thought if he gave it a good name people would want to move there. So he named the island Greenland. Greenland...
ALL KINDS OF CAPES
> This part of the Cape of Good Hope is called "The Point" in South > Africa. > These are fishing boats in a harbor on Cape Cod. A cape can be a coat that you throw over your shoulders. But a...
