Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human body contains over a billion miles of DNA.
147
There's 100 trillion good bacteria living in your body.
17
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Held in farts enter your bloodstream and are bad for your body.
26
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
The human brain doesn't stop developing until about 25 years old.
102