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