This form of percapita rate, derived from branching theory, is robust to variation in the true extinction rate, including events as dramatic as mass extinctions.

John had no chill at the party – he said what was on his mind to his brother and made a massive scene!

The idea behind the shape, reminiscent of an hourglass, is to emphasize noseriding and tailriding for recreational surfers.

Adding layers of texture to a cookie by folding in ground-down bits of goodness is one of our favorite ways to pack a big punch, but you need to choose your fighter wisely. If you pick something too smooth, your cookie won't gain any oomph, and if you choose something too flavorful, your cookie may end up overwhelming (sorry, Flamin' Hot Cheetos).