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Insulin Is Used to Treat Diabetes

In 1869, spurred by a medical student's observation of cells in the pancreas called "Islets of Langerhans," scientists began working to identify insulin's role in the body and to extract and purify it. Today scientists know that insulin is a hormone that regulates carbohydrate metabolism and that patients with diabetes have a decreased ability to either produce or absorb it. What happened when a 14-year-old diabetic was given the first insulin injection in 1922?

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Rubik's Cube: The World's Best-Selling Toy

Invented in 1974 by Hungarian sculptor and professor Erno Rubik, the Rubik's Cube is now said to be the world's best-selling toy. More than 300 million of these colorful, square puzzles have been sold worldwide. The standard Rubik's Cube has 54 square faces—nine on each side—covered by stickers in six solid colors. When the puzzle is solved, each side of the cube is a single solid color. What is the current world record for solving a Rubik's Cube?

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John A. MacDonald

MacDonald was the first prime minister of Canada, serving from 1867 to 1873 and from 1878 to 1891. He played a crucial role in expanding Canada's territories to include the Northwest Territories and British Columbia. MacDonald earned much praise for his role in forging a nation of sprawling geographic size, with two diverse European colonial origins, and a multiplicity of cultural backgrounds and political views. What was the Pacific scandal, and how did it affect MacDonald's career?

Last updated on Friday, 11th January 2008

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