Stacy Mitchell is writing a great series at Grist.org about Wal-Mart's greenwashing practices. 

Jay Michaelson writes about how he stopped thinking of Judaism as "God vs. gay."

Terrific review of Blue Revolution at Scientific American. Don't forget to enter our giveaway!

Also in Scientific American, a look at medical overdiagnosis.

A Hollywood turn for Why Do Woodpeckers Get Headaches? 

Looking for something to listen to? Lots of options: Dan McKanan talking about Prophetic Encounters; Kate Whouley on Remembering the Music, Forgetting the Words; Amy Alexander on Uncovering Race; or watch Anita Hill on Leonard Lopate's PBS show.