The Earth's atmosphere weighs about 5.5 quadrillion tons.
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One cubic foot of gold weighs more than 1,200 pounds!
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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Most dust particles in your house come from dead skin.
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Sound at the right vibration can bore holes through a solid object.
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A ball of glass will bounce higher than a ball made of rubber.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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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.
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