COMET HALE-BOPPCOMET ORBITSBIOGRAPHY: EDMOND HALLEY English, 1656-1742METEORSFIND OUT MORESometimes icy lumps left over from the birth of the Solar System visit our skies. We see them as comets…
CONTACT LENSCONCAVE AND CONVEX LENSESFRESNEL LENSSLIDE PROJECTORMAGNIFYING GLASSFIND OUT MOREA lens is a piece of transparent plastic or glass that can make things seem to change size. It works…
What Materials Make the Best Crystals?Intermediate-Level Science ProjectsChemistryCan You Be a Human Battery?What Materials Make the Best Crystals? Growing crystals isn't difficult, and it makes a…
The thickness of your skin varies from 1/2 to 6 millimeters, depending on the area of your body. The four taste zones on your tongue are bitter (back), sour (back…
An adjective modifies a noun or pronoun. In this case, "modifies" means "tells more about." Adjectives are words that describe things.I planted orange flowers in the round pot.The long-eared…
1914-18 (U.S. involved, 1917-18)
America's Role in WWI: A Video
Watch this video about America's delayed entry in WWI. See the role of submarine warfare, President Wilson, and…
U.S. News | World News Here are the key events in business and science news for the month of August 2009. Cash for Clunkers Program Extended (Aug. 6): The Senate votes 60–…
The world's a busy place. Get caught up on the biggest news each month over at our sister site Infoplease. We've got what you need to know about what's going on in the U.S., around the world…
