The smell of freshly cut grass is actually a plant distress call.
31
One barrel of petroleum holds 42 gallons.
20
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The earth is approx. 6,588,000,000,000,000,000 tons.
175
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12