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Understanding the Summer Solstice

In 2017, summer begins June 21, 12:24 A.M. EDT (04:34 UT*) by Karen Barss Related Links Earth's Seasons: Video and Activities Summer Solstice The Solar System The Sun Did…

Brewer's: Grass

Gone to grass. Dead. The allusion is to the grass which grows over the dead. Also, “Gone to rusticate,” the allusion being to a horse which is sent to grass when unfit for work. Not to…

Lyndon B. Johnson (January 4, 1965)

On this Hill which was my home, I am stirred by old friendships. Though total agreement between the Executive and the Congress is impossible, total respect is important. I am proud to be among my…

Animal Hall of Fame

Land mammal: African elephants weigh up to 14,000 pounds and can eat as much as 600 pounds of food a day! Their trunks contain as many as 100,000 different muscles. Marine mammal: The blue whale…

Lava Domes

Volcanic or lava domes are formed by relatively small, bulbous masses of lava too viscous to flow any great distance; consequently, on extrusion, the lava piles over and around its vent. A…

What Is Cancer?

Cancer is really a group of diseases. There are more than 100 different types of cancer, but they all are a disease of some of the body's cells. Healthy cells that make up the body's tissues…

Grasslands

Grasslands are places with hot, dry climates that are perfect for growing food. They are known throughout the world by different names. In the U.S. they are called prairies and extend from…