Our universe is a fascinating and awe-inspiring place.

Did you know that your hair collects dust from space,

that the universe is expanding inside your body,

or that there are diamonds everywhere.

I'm Tom Kerr's, astronomer and author,

and these are just a few of the 101 fascinating topics

explained in my new astronomy book, Diamonds Everywhere, Diamonds Everywhere,

Or inspiring astronomy discoveries available from all good booksellers. This is

This is Scientific American 60 Second Science. I'm Emily Schweng.

Sometimes discoveries seem so simple.

You know, basically we've found a bunch of holes in the ground.

That's Edward Reinhart.

He's an archaeologist and geologist at McMaster University in Ontario, Canada.

But, you know, ultimately very important holes in the ground.

Reinhard and colleagues believe they found some of the first clear evidence of mining activity

in a system of caves in Quintanaru on the Yuckatan Peninsula.

The fine dates back to between 10 and 12,000 years ago.

So these are some of the very early people that have come and migrated to the Americas via the Bering Strait.

But getting to what remains of these miners and the tools they left is a challenge.

And like his cave divers, I mean, you've got to be so carefully you don't get lost.

These cave systems in Mexico, which were once dry, are now completely filled with water,

thanks to a warming climate and sea levels that rose over time.

...