In the aftermath of the BP oil spill in the Gulf of Mexico, 1.3 million barrels of oil is still unaccounted for. Some of it is in the form of tar balls, sticky masses of oil that are the hallmarks of accidental oil spills. Tyler Irving speaks with Dr. Peter Hodson, a fish toxicologist who is studying the impact that these balls and other forms of spilled oil will have on wildlife in the Gulf.

On October 25 2010, residents of Canada’s most populous city will vote on who will replace David Miller as mayor. The Toronto Environmental Alliance (TEA) is a group that promotes green projects in the city; they have produced an analysis of each candidate’s platform, issued in the style of a report card. Bryant Boulianne speaks with Franz Hartmann, Executive Director of the TEA.