Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Iron weighs more after it rusts.
16
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The average home creates more pollution than does the average car.
33
Scientists aren't sure what color dinosaurs were.
312
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17