AP - A Canadian company whose pipeline leaked hundreds of thousands of oil into a Michigan river boasts on its website of being "an industry leader in pipeline safety and integrity."

AP - Partisan disagreements in the Senate will delay passage of legislation responding to the Gulf oil spill until at least September, when Congress returns from its summer recess.

AP - In 1969, Sen. Gaylord Nelson was so moved after seeing the devastation of an oil spill off the California coast near Santa Barbara that he called for a national teach-in on the environment. The following year the resulting "Earth Day" kick-started the modern environmental movement and shaped the way Americans thought about their air, water and soil.