Although it has been studied since the eighteenth century, the mystery of what causes lightning has not been completely unlocked.
With the presidential election just a month away, the campaigns are heating up. In addition to the official candidate sites for Barack Obama and John McCain, here are some online resources for students to learn about the election process...
Games for young children based on a topic scheme
Each fall, as a chill returns to the evening air, and homework returns to the kitchen table, parents repeat the dictionary mantra: "Look it up!"
A wiki is a type of collaborative website with integrated tools for adding and editing content. The online encyclopedia Wikipedia.org is one popular example, WikiHow.com is another.
A group of stars that forms a picture is commonly called a constellation. Astronomers, however, call these star pictures asterisms, and have a slightly different definition of a constellation.
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