Dear EnviroTalk: What are the differences between farmed versus wild salmon when it comes to human and environmental health?

Dear EnviroTalk: Is the dairy industry really trying to stop soy milk makers from calling their products “milk?” They must feel very threatened by the preponderance of soy milks now available in supermarkets.

Dear EnviroTalk: What are some simple things I could do to green the office I work in?

-- James Raskin

Dear Enviro: I heard that Walmart is having a bigger positive impact on the environment than any other U.S. institution. What are they doing along these lines? -- R. Schlansker,