by Mark Hughes Aliens have been invading the United States for centuries. A joke? Not at all. In fact, thousands of foreign plant and animal species have arrived on U.S. soil. Some…
(Encyclopedia) harrow, farm implement, consisting of a wooden or metal framework bearing metal disks, teeth, or sharp projecting points, called tines, which is dragged over plowed land to pulverize…
(Encyclopedia) gunpowder, explosive mixture; its most common formula, called “black powder,” is a combination of saltpeter, sulfur, and carbon in the form of charcoal. Historically, the relative…
(Encyclopedia) spear, primitive weapon consisting of a wooden shaft tipped with a sharp point, usually 8 to 9 ft (2.4–2.7 m) in length. The point may be carved from the shaft and hardened in a fire,…
Pinpointing the explorer's whereabouts on October 12, 1492 by Borgna Brunner Christopher Columbus The Voyages First Voyage, 1492-1493San Salvador, The…
Born of ProbabilityTheories of the UniverseChunks of UncertaintyJust a Little Math Won't HurtBorn of ProbabilityThey're Complementary After All Schrdingers's picture of the atom relied on a…
Art meets science, or vice versa by Holly Hartman Did you ever hear that "oil and water don't mix"? Here's groovy proof. You will need: vegetable oil or baby oil water food coloring…
(Encyclopedia) cloud computing, the delivery of shared computing resources over a network in a manner that makes accessing and configuring those resources convenient and largely independent of the…
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…
