For Earth Day on April 22, interesting facts including who invented it, why it's on that date, and how it turned into a ...

Add Yahoo as a preferred source to see more of our stories on Google. Get excited about Earth Day with these interesting facts about the world. Traveling to new places always expands the mind, but ...

Add Yahoo as a preferred source to see more of our stories on Google. Did you know that our planet is rocketing around the sun at 67,000 mph? Or that it once had two moons? Here are some amazing facts ...

PENNSYLVANIA, USA — In the days, years, and decades ahead of the first Earth Day, Americans were consuming large amounts of gasoline and fossil fuels. Businesses were able to emit plumes of smoke into ...

Various astronauts have already set foot on the moon. Neil Armstrong steps into history July 20, 1969 by leaving the first human footprint on the surface of the moon. The 30th anniversary of the ...