Spandex, yoga pants, and Lycra aren't just for Pilates classes anymore. They're infiltrating the American wardrobe, and it's plaguing the already beleaguered cotton industry. Plus, there are $2 billion worth of bitcoin transactions every day. Some governments, like South Korea, want to regulate speculation on the volatile cryptocurrency. And this holiday weekend, you may find yourself watching a football bowl game. It's a tradition that dates back to the first Rose Bowl game in 1923, but why has the schedule ballooned to 40 bowl games a year?