There's a regenerative candle that creates a new candle as it melts.
20
A man called Dean Karnazes ran 350 miles in 80 hours with no sleep, ran a marathon in the South Pole in -25 °C temperatures without snowshoes, and ran 50 marathons in 50 states in 50 days.
14
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
A 22 year old Chinese man needed a new nose. Instead of a transplant, a surgeon built a new nose on his forehead.
2