- The Dead Sea is so dense with salt, you can easily float on it without drowning.
- The world's densest wood, the Black Ironwood (Olea laurifolia), does not float on water and therefore sinks.
- The mass of our entire atmosphere is estimated to be some 5.5 quadrillion tons (55 followed by 14 zeros).
- Chewing gum was invented by a dentist, named William Semple - as a way to exercise your jaws.
- The amount of water beneath our ground soil is 50 times as much as all the water in the rivers and lakes combined.
- The deepest location on Earth is Mariana Trench, about 11km deep in the North Pacific ocean.
- Many physicists believe wormholes (a "shortcut" through space and time) exist all around us but they are smaller than atoms.it's called string.
- A solar panel 100 miles by 100 miles (161x161km) in the Mojave Desert (USA) could replace all the coal now burned to generate electricity in the entire U.S.
- The Atlantic Ocean grows at about the same rate as your fingernails.
- The only rock that floats in water is pumice.
- The oldest and largest clearly visible meteorite crater site in the world is The Vredefort Dome in Free State, South Africa. It is 380km across.
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