All the gold ever mined would fit into about 3 and a half Olympic sized swimming pools.
Osmium on the other hand, is one of the rarest of metals. Less than one cubic meter has been extracted. That’s about the size of this chair
Diamonds and graphite are both pure carbon. The only difference is how the atoms are arranged.
They contain potassium-40, a naturally occurring radioactive isotope. However, you would have to eat 50 million bananas at once for a lethal dose of this radiation. Not possible!
Although we can’t see Oxygen as a gas, it’s color is pale blue.
About 10^80 atoms make up the universe. There are about 10^120 possible move in a chess game.
Although we cannot cool anything to absolute zero, it would be like reaching light speed, we can get awfully close.
The Hydrogen atoms in our body and all around us were created shortly after the Big Bang, some 13.7 billion years ago. Does that make us older than dirt?