An oil spill from a BP refinery in Whiting, Ind., this week has raised new worries about the stepped-up processing of Canadian tar sands – and threats to Lake Michigan.
Considering that seven million people in Chicagoland depend on Lake Michigan for drinking water, even a little spill might be cause for concern.
Exactly what was spilled? How far did it spread? And has BP contained the leak?
We're joined now by Michael Hawthorne, a reporter with The Chicago Tribune.
Listen to the full interview above.