Allen Hershkowitz, a longtime green revolution thought leader with the NRDC and sustainability writer, is now examining how to green sports in America. Hershkowitz lays down an alarming stat right out of the gate: 56% of Americans say they pay attention to sports, while only 18% pay attention to science Allen Hershkowitz, a longtime green revolution thought leader with the NRDC and sustainability writer, is now examining how to green sports in America. Hershkowitz lays down an alarming stat right out of the gate: 56% of Americans say they pay attention to sports, while only 18% pay attention to science