| Dry ice does not melt. It sublimes, which means it goes directly from solid form to gaseous form |
| The tails of comets generally point away from the Sun whether the comet is approaching the sun or receding |
| Airports at higher altitudes require a longer airstrip due to lower air density |
| It takes glass one million years to decompose, which means it never wears out and can be recycled an infinite amount of times! |
| Gold is the only metal that doesn't rust, even if it's buried in the ground for thousands of years |
| The Earth gets 100 tons heavier every day due to falling space dust |
| The letter J does not appear anywhere on the periodic table of the elements |
| Mercury is the only metal that is liquid at room temperature |
| Everyone’s tongue print is different, like fingerprints |
| The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket |