Usain Bolt was offered a position as a wide receiver in the NFL and rejected it due to the hits NFL players take.
27. You steadily "dry out" as you age. A newborn human baby is 75% water, adult men are about 60%, adult women 55%, and elderly people are roughly half.
28. There is an Island in Louisiana named Isle de Jean Charles that has lost about 98% of its landmass due to rising sea levels. Plans are underway to relocate the remaining residents.
29. There is a 'fake' townhouse in Brooklyn Heights that's actually a ventilation shaft for the subway.
30. In 2009, just in case Space Shuttle Atlantis was damaged while working on the Hubble, Endeavor was readied to launch a rescue mission. This was one of the few times both shuttle launch pads were occupied.