The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain ...

"There are so few places nature can go without annoying humans." Homeowner shares fun photos of furry yard visitor climbing tree: 'Amazing to watch' first appeared on The Cool Down.

The forest floor is a world of wonder in its own right – a soft carpet of redwood sorrel, sword ferns, and emerald moss that has evolved to thrive in the perpetual twilight created by the dense canopy ...