Tennessean: Bellevue resident Ed Polk hangs onto 350 acres of forestland, not to market its timber but because he loves wildlife and wants to preserve a sense of Tennessee wilderness for future generations. But soon, he and fellow owners of wooded land may be able to earn money from their trees anyway, simply because they’re there — soaking up carbon that otherwise would escape into the atmosphere and potentially warm the Earth. As industries that pollute face the possibility of …