The Vernal Equinox (March 20, 2012) is one of the four great seasonal changes every year. Day and night are equal, and the changing weather can lift the spirits of young -- and old -- alike. Don't miss this opportunity to have some fun and educate at the same time.
Albert Whitman & Company, publishers of First Peas to the Table: How Thomas Jefferson Inspired a School Garden (written by Susan Grigsby, illustrated by Nicole Tadgell), invite your classroom to enter the 2012 First Peas to the Table Contest.
How could the author of the Declaration of the Independence own slaves? How could twenty percent of the population of the new United States, founded on the principles of liberty and equality, live in bondage?
Life exists on Earth because our planet is like a giant greenhouse. Earth's atmosphere absorbs and holds heat from the Sun through a process called the greenhouse effect. To see a model of how this works, make your own miniature greenhouse or "terrarium" out of a clear container.
We humans consider them the "rats of the insect world," yet cockroaches could be considered one of the most successful creatures on earth. Entomologists have found fossilized cockroaches that are more than 300 million years old.
Information on the current implementation and history of daylight time in the U.S. Daylight Saving Time begins on March 11. Not all places in the U.S. observe daylight time. In particular, Hawaii and most of Arizona do not use it. Indiana adopted its use beginning in 2006.