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It's Wednesday, January 11th, 2020.

I'm Jackson Bird today.

We're the first stone tools in the Americas made not by ancient humans, but by monkeys.

Plus, could color-changing cars be in our future?

And will other nations follow New Zealand's lead on banning cigarettes

to future generations? Here's some cool stuff for your ride home. Could 50,000-year-old stone

tools in Brazil sometimes thought to be evidence of ancient humans on the continent

tens of thousands of years earlier than commonly believed, actually have been left there by

monkeys. A paper published in the most recent issue of the journal Holocene is the latest in a line

of studies focusing on tool use by cappuccine monkeys in Brazil

and how that relates to the archaeological record of ancient humans. For nearly a century,

many archaeologists have argued for the Clovis First Theory, which says that the Clovis

people who lived in the Americas 13,000 to 14,000 years ago,

were the first humans on the continents, arriving only after glaciers subsided enough

towards the end of the Ice Age. But there have been a number of challenges to that theory over

the years, quoting ArtNet. In recent decades, archaeological sites like the Buttermilk Creek complex in Texas,

...