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World Science Festival
Shaking Up the Dark Universe: The Dark Horses of Dark Matter
Forget what you think you know about dark matter. After a 30-year search for a single, as yet unidentified, species of dark matter particle that would make up some 25% of the mass of the universe, physicists are starting to consider...
Clarendon Learning
Who is George Washington? | George Washington for Kids | Learn about the first president of the U.S.
Who is George Washington? What did George Washington do? Did George Washington cut down a cherry tree? In this video we learn all about George Washington for kids. George Washington was the very first president of the United States and...