At home, I have a wooden plaque on my wall that lists all the national parks I’ve been to. Next to it, there’s a bag of small painted trees meant to represent the ones I’ve yet to visit. Only eight of ...

Crows, the undisputed math nerds of the bird world, have done it again. This time, though, it’s not arithmetic or philosophy of math that they’ve conquered – it’s geometry. “Claiming that […] only ...