Earth911's Mitch Ratcliffe talks with Jon Chambers, cofounder of 8BillionTrees.com, which offers a variety of ways to “shop and erase your carbon footprint.” They've planted more than 6.4 million trees to date and make is simple to calculate how much CO2 your daily habits produce. For example, 8 Billion Trees provides tree-planting to offset your streaming video habit, a birthday party or your pet’s carbon footprint. Chambers and his cofounder Michael Powell set out to create “the most environmentally aware social enterprise on the planet.”