i would like to thank the exelon corp. of chicago for sponsoring this program. we will see you back here next week. cheers. >> many have spoken out on the need to transition to a clean energy future. at exelon, we are acting. by 2020, we are committed to reducing, offsetting, or displacing more than 15 million metric tons of greenhouse gas emissions annually from greening our operations, helping customers and communities reduce emissions, and offering more low carbon electricity in the marketplace. at exelon, we are taking action and we are seeing results. produced in collaboration with whut, howard university television. from washington, d.c., this has been "white house chronicle," a weekly analysis of the news with insight and a sense of humor featuring llewellyn king, linda gasparello, and guests. this program can be seen on pbs stations and cable access channels. to view the program online, visit us at whchronicle.com. to view the program online, visit us at whchronicle.com.