According to David Grosser, a vascular surgeon in the Gold Coast, Australia, clots behave in many different ways.

CNN: Deep vein thrombosis explained

This attitude not only encourages anti-smokers to tolerate grossly regressive taxes and even grosser infringements of individual liberty.

ECONOMIST: Rout of the new evil empire

Among Germany's lower mountain ranges, the Bavarian Forest has the most reliable snow levels, with plenty of good downhill action on the Grosser Arber mountain.

BBC: Getting fresh in Germany: Cycling, hiking and skiing

Next up, things get a bit animated with Packing for Mars author Mary Roach, who will discuss the grosser side of manned space travel, while professional prognosticator (and sometimes rock musician) John Roderick kicks off his new reoccurring segment by explaining how space exploration helps him get out of bed in the morning.

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