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02/14/14

Winter Olympics Special: The Slippery Science of Ice Skating

Skating_On_Ice_clip_art_hightBy Michael Q. Bullerdick

Learning how to ice skate is a tricky bit of business that requires athleticism, a healthy sense of balance, and a high pain threshold. Of course, you also need a decent pair of skates and a pond-sized patch of slippery ice. Those last two items are easier to summon than the rest and they have been for a period going on 3,000 years now. But it might be surprising to note—especially during the Winter Olympics—that until just a few years ago, physicists didn’t fully understand how skating worked. More precisely, they lacked a fundamental knowledge of what exactly makes ice slippery. Continue reading

02/5/14

Can Death Row Last Meals Reveal Guilt or Innocence?

electric_chair

By Michael Q. Bullerdick

Although it’s true death row guards once routinely wagered on what a condemned man might select for his last meal, the morbid game was abandoned long ago, less out of empathy than boredom. That’s because, for the better part of a half-century or so, the penultimate menu has been fairly predictable: fried chicken, a cheeseburger or steak cooked medium rare and served with some kind of potato (almost always French fries), followed by pie á la mode (apple or pecan) or a bowl of ice cream. The real gamble, it seems, is not what an execution-bound inmate will eat—but if they’ll eat. And that decision, Cornell University researcher Kevin Kniffin recently revealed, can be a reliable “tell” of whether an inmate knows or has convinced himself that he’s innocent. Continue reading