Can we reverse climate change? Environmentalist and author Paul Hawken thinks so. He’s created a coalition of scientists and entrepreneurs. Project Drawdown aims to create 100 solutions to global warming. He talks about the effort in advance of an appearance at the Carter Center in Atlanta today, April 25. Last summer, archeologists discovered a 440-year old Spanish fort buried underground at Parris Island, South Carolina. When Fort San Marcos was built, it was near the Spanish settlement of