New Scientist
Image: David Bustos/Matthew Bennett
The delight that children find when they jump in muddy puddles has a surprisingly long history. Fossil footprints discovered at an archaeological site in New Mexico show that a group of youngsters living at least 11,500 years ago spent a few carefree minutes engaged in some joyful splashing. But the world was very different back then: the puddles in question had formed in the deep footprints left by a now-extinct giant ground sloth. Read more on newscientist.com…
