The NationalMonarch butterflies becoming increasingly rareSep 28, 2013 | 2:32At Point Pelee National Park there used to be butterflies by the bushel, but now you'd be lucky to spot more than a handful.
The NationalBumpy road to phasing out incandescent bulbsDec 20, 2013 | 2:51A few years ago, the government announced it would ban incandescent bulbs. But that plan has been delayed and changed, making the situation confusing for consumers.
The NationalMercury danger remains at Grassy NarrowsApr 5, 2010 | 10:52Forty years after the river and fish were poisoned with mercury, the Ojibway people of Grassy Narrows are still suffering the effects
The NationalOntario woman advocates protection and cultivation of treesJan 13, 2014 | 6:35To Diana Beresford-Kroeger, trees are an integral part of her world. And she has made it her mission to nurture them for future generations.
The NationalDeepwater Horizon oil spill, five years laterApr 15, 2015 | 10:28It's been nearly five years since the Deepwater Horizon oil spill. More than three million barrels of oil gushed into the Gulf of Mexico. Paul Hunter takes us back to Louisiana.
The NationalScience on skatesJan 23, 2013 | 2:19Researchers say ice conditions on outdoor rinks are a great way to track climate change. At the very least, it's a great way to attract volunteers for a project called RinkWatch