Friday coffee break: The saddest of Barbies, the nastiest of penguins, and the murdering-est of house pets

Yemen Mocha for the fall

From Sarah: Grad School Barbie is probably not this year’s hot toy. And your lack of confidence with mathematics is probably not due to your genes.

From Jeremy: Dolphins and penguins and otters are actually not all that cute to each other. And a new review considers how human food waste distorts natural population dynamics.

For National Cat Day (which was Tuesday), CJ reminds us all that outdoor-living cats are really bad for outdoor-living wildlife.