I've read books about Helen Keller and heard about her amazing story all my life and yet until this video, I had never seen her talk. In this three-minute video, Anne Sullivan explains how she first taught Helen to speak, all while having Helen's hand cover her face. Truly amazing. Take three minutes to watch this incredible video of Helen Keller and Anne Sullivan.

P.S. If you want to know more about Helen's story, check out this biography of Helen Keller.

During World War II, the United States and Nazi Germany were in a race to be the first to develop and build an atomic weapon. The U.S. put $6 billion and many of the greatest scientific minds of the day into developing the bomb, in an expansive project called the Manhattan Project. Find out how this all got started.

On May 29, 1953, New Zealander Edmund Hillary and Nepalese Tenzing Norgay became the very first people to reach the top of Mt. Everest. Find out how they were successful and the challenges they faced in becoming the first to successfully climb Mt. Everest.

The Museum of the Moving Image in Queens, New York, is the lucky recipient of a number of well-loved Muppets characters and historical items. Over 400 items are being donated by Jim Henson's family and will be displayed in a new, 2,200 square-foot gallery.

Among the 400 items are 200 puppets (which include Kermit the Frog, Miss Piggy, Bert and Ernie, and Elmo), costumes, behind-the-scenes footage, and props from some of Henson's most memorable works.

The exhibit is expected to officially open near the end of 2014.