writerBorn: 1965Birthplace: Appleton, Wisconsin The daughter of Chinese immigrants, Chang left Wisconsin at 18 to attend college at Yale University, where—after trying pre-med and pre-law classes—…
Millions of years from now, Los Angeles will be close to Alaska. Our world is moving constantly, spinning at a rate of 1,000 miles per hour. We are whirling around the sun at 20 miles per second.…
SOLID PARTICLESLIQUID PARTICLESGAS PARTICLESSOLAR PLASMAMELTINGBOILINGFIND OUT MOREAll matter exists as solids, liquids, or gases. These are called the states of matter. Matter can change from…
Zubin MehtaBiographies ofNotable Asian Pacific AmericansA-Z ListGovernment Officials and PoliticiansBusiness and Media LeadersAthletes & Sports PersonalitiesScientistsEntertainers:…
Invented by the Greeks in 400 B.C., catapults were used in ancient and medieval times to hurl stones, spears, and other objects at fortifications.
The crossbow was invented in China but developed…
Down from the treesFierce, but fluffyOut of the swampNo one has ever seen a living dinosaur, so scientists rely on fossil remains to provide clues to how these ancient reptiles looked and behaved…
HOW DO CHEMICAL REACTIONS CHANGE MATERIALS? RUSTING IRON WHAT MAKES GLUE STICK? HOW DOES HEAT CHANGE MATERIALS? REVERSIBLE CHANGESPERMANENT CHANGESFIND OUT MOREWe can use chemical reactions and…
Try to imagine life without antibiotics. We wouldn’t live nearly as long as we do without them. Here’s a look at some discoveries that have changed the world. It’s impossible to rank their…
The Question: What causes a chameleon to change its body color? The Answer: The chameleon has several cell layers beneath its transparent skin. These layers are…
Resident population and net change Source: U.S. Census Bureau, 2000 Census of Population, Public Law 94-171 Redistricting Data File. Updated every 10 years. http://factfinder.census.gov. Definition…
