Billions of neutrinos pass unnoticed through your body every second.
6
A cubic yard of air weighs about 2 pounds at sea level.
31
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
A cesium atom in an atomic clock beats over nine billion times a second.
43
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75