Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Nearly 50% of the world's scientists are assigned to military projects.
71
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Your brain is 80% water.
525
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Out of all the senses, smell is most closely linked to memory.
146
Most dust particles in your house are made from dead skin!
67