FIND OUT MOREThe sour taste of food such as lemons is due to acids. Acids in food are weak, but they can sting if they touch a cut on your skin. Strong acids, such as sulphuric acid in car…
What is this job like? Teachers teach children to read, write, do math, and much more. They use games, videos, computers, and other tools to teach children different subjects. Teachers show…
civil rights activist and ministerBorn: Oct. 3, 1954Birthplace: New York, N.Y. A flamboyant and controversial African American political activist, Sharpton was fully ordained as a Pentocostal…
This table lists the top-grossing movies of 2011. Harry Potter made the most money in the United States in 2011.
Rank Title Total Gross 1. Harry Potter and the Deathly Hallows Part II…
Sandals originated in warm climates where the soles of the feet needed protection but the top of the foot needed to be cool.4,000 years ago the first shoes were made of a single piece of rawhide…
IntroductionOverview of EconomicsIntroductionWhat Is Economics and Who Cares?Will That Be Large or Small?A Firm BaseGetting Organized: Command, Market, and Mixed EconomiesThree Economists and Their…
Follow the timeline to learn more about the history of slavery in the United States, including the arrival of the first African slaves to America, the federal banishment of slave importation, and the…
3.85 billion years ago: Life on Earth begins.10,000 years ago: More than 15 billion acres of land are covered with forest.1750–1850: The Industrial Revolution. Fossil fuels used in factories.1957–…
