Conserving America: The Wetlands

Narrated by Burgess Meredith, this PBS documentary profiles Americans working to protect the nation's wetlands, more than 50 percent of which have already vanished because of massive development. The dedicated environmentalists include former trapper Alligator Annie, who takes viewers on a trip through Louisiana's coastal marsh, and author Marjory Stoneman Douglas, who's worked to preserve the Florida Everglades for half a century.