The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Scientists aren't sure what color dinosaurs were.
312
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
No matter how cold it gets, gasoline will not freeze.
107