One 75-watt bulb gives more light than three 25-watt bulbs.
57
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Most dust particles in your house are made from dead skin!
67
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The bark of an older redwood tree is fireproof.
65
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304