Scientists aren't sure what color dinosaurs were.
312
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One third of the electricity produced on earth is used to power electric light bulbs!
75
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
One barrel of petroleum holds 42 gallons.
20
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Nearly 50% of the world's scientists are assigned to military projects.
71
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20