Our picks for the week of May 23-29: 

• The Gulf oil spill dominated the news again this week, from revelations in Washington about the Minerals Management Service to the discovery of new plumes of oil off Florida

• A little pink pill grabs the spotlight as the Food and Drug Administration (FDA) prepares to consider the female Viagra.

• Lance Armstrong is lending his name to the all-electric Nissan Leaf. In return, the celebrity biker will get a Leaf of his own.

• Bill McKibben manages to take a grim topic and turn it into a good read with his latest book, "Eaarth: Making a Life on a Tough New Planet".

• Our auto blogger met the new face of high-speed, electric motorcycles this week. Let's just say he was impressed.

• Alexandra Cousteau, the granddaughter of adventurer Jacques Cousteau, is bringing her water awareness campaign to the United States. Her team — traveling on the bus used by John McCain during his presidential bid — plans to tell the story of this continent's waterways. 

• Our friends at The Nature Conservancy raise an interesting discussion topic: Why conservancy groups must work with the energy industry, not against it. 

• Blogger and entrepreneur Karl Burkart runs the numbers, pitting the cost of offshore oil against offshore wind. You be the judge.

• We catch up with more celebrities this week, asking "American Idol" finalists Lee DeWyze and Crystal Bowersox to share their green lifestyle tips. (Sharon Osbourne piped in, too.)

• And finally, a question from a penny-pinching pet owner: How can I keep my dog clean — with my sanity and wallet intact? Our pet expert offers a good grooming solution. 

PLUS: Don't miss the week in photos, with a heartbreaking image of a heron chick that could easily become the signature image of the environmental catastrophe in the Gulf. Balance that somber photo with the one above, of a dog competing in the Loews Surf Dog Competition in California. Happy Memorial Day.