You know how there's always that last bit of liquid in the glass, just a few drops, that's resistant to lift-off no matter how many times you re-position the straw or how much suction force you apply?  Well, Yellow-bellied Sapsuckers (Sphyrapicus varius) solved this physics problem over 10,000 years ago. Turns out, the solution to... Continue Reading →

If the stranger hoped to slip into Lafayette Square unnoticed he went about it all wrong. Sure, choosing a plain white top beneath an unadorned black waistcoat might sound like a reasonable way to avoid detection, especially when one is hanging out against a backdrop of grey-scale bark and shadow. I could tell at a... Continue Reading →