Nat Geo roughs out March

The National Geographic Channel is welcoming a new series, Rough Trades, Saturdays at 8 p.m., beginning March 4. The show looks at people brave enough to take on the world's toughest jobs, from venom hunters to an elite anti-terrorist taskforce. March 4 will see a two-hour special, and then two back-to-back episodes follow every Saturday, beginning March 11.