Like most people, I thought environmental concerns emerged from the writings of Henry David Thoreau, John Muir, and Rachel Carson. I guess I may have been wrong. In 1847, a US congressman, George Perkins March made speeches that spoke to our modern concerns about climate change and destruction of natural resources and their myriad ecosystem services. March may have even been the "spark" that convinced President Abraham Lincoln to set aside Yellowstone, the first national park in the ...