A teen in Michigan built a working nuclear reactor. He taught himself how to build it as a weekend hobby project in his basement from ages 15-17 for $3500.
8
In 1965, a four-year-old nearly drowned at a beach, but was rescued by a woman named Alice Blaise. 9 years later, that boy saved a man at the same beach. That man was Alice's husband.
60
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Between 2007 and 2012, Bill Gates gave away $28 billion; saving 6 million lives.
34
There's a swing on the edge of a cliff in Ecuador. It has no safety measures and is called the 'Swing at the End of the World'.
22
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17