Time Magazine: Glenn Dufrene has lived his whole life on the Louisiana bayou, and he treasures its boggy natural beauty. When he got the chance this month to work with a crew protecting the coast from the massive Deepwater Horizon oil-rig spill in the Gulf of Mexico, the 47-year-old truck and airboat driver headed for the Mississippi River delta town of Venice, on Louisiana’s southwestern tip. Dufrene says it was sad enough this week to see the oil slick, about two inches thick in some places, arrive at …