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Marvel's superheroes unite for the ultimate adventure in The Avengers, in theaters May 4
Learn interesting stats about the London Games
Did Gustave Whitehead beat the Wright Brothers to the sky?
The country is taking tough steps to change the way it produces energy.
Greyson McCluskey, 16, takes the top prize in the STEM competition Wouldn’t It Be Cool If…
Learn about this Summer Olympic sport
Christina and Eric Bear are spreading the word about the dangers of radon gas
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