As President Obama and Prime Minister Harper arrive in Copenhagen, billions are being pledged to address the needs of the developing world. Tonight on the show, the notion of "climate debt." What is it, how does it work, and will it work?

Don't throw your junk in my backyard. New numbers are out in Buchans, a former mining town in Newfoundland, showing high levels of lead and other heavy metals in people's backyards and recreation areas. The mayor of Buchans joins us tonight, along with an environmentalist from Belladune, NB, whose town has their own battle with lead. She shares her experience, as well as some tips. 

Reporter Connie Walker follows a charity that's hoping to connect Torontonians to the homeless. One can make a donation, receive a meal coupon, then give that voucher to a homeless person. Find out if this approach creates a full circle.

And children of the world are trying their very best to be good as they count down the days to Christmas. Our marketing maven Calvin Leung explains how materialism starts, at very a young age. All this and more, tonight at 7:00 p.m. ET live.