A blind American man taught himself to navigate using echolocation. His hobbies include hiking and mountain-biking, and he has now trained over 500 students in his ‘tongue-click’ technique.
14
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
A woman named Rachel Krishevsky who died at age 99 had 1,400 direct descendants.
17
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5