The highest speed ever achieved on a bicycle was 167.04 mph by Fred Rompelberg in 1995.
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.
Eminem repeated the 9th grade three times.
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)