For today's Geo Quiz: The Yukon Quest is under way. 25 mushers and their sled dogs left Whitehorse in Canada's Yukon Territory on Sunday. They're headed northwest to Fairbanks, Alaska — 1,000 miles away, as the dogs run. Where's the halfway poi
Today's Geo Quiz is for the birds. The Great Backyard Bird Count gets under way this weekend. The idea is to report on what's on view in your backyard. Miyoko Chu of the Cornell Lab of Ornithology explains why counting birds is important.
For today's Geo Quiz, we head to the frozen north. We have heard a lot about the problem of melting ice as climate change warms up the Arctic. But scientists are also worried about something else that is melting up there — permafrost.
Animal manure on industrial farms can wreak environmental havoc. At the University of Guelph in Ontario, microbiologist Cecil Forsberg has found a solution to the problem. He genetically modified pigs to produce low-phosphorous manure.
Derek Stoffel reports on today's announcement by Canada's prime minister regarding Afghanistan, as Stephen Harper said Canada will not extend its own mission in Afghanistan unless another NATO country sent more troops to Afghanistan's dangerous Kandahar province.