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Anthony A. Martino Memorial Scholarship Competition: High school students who attended The Goddard School as preschoolers or kindergarteners may apply for this $10,000 scholarship.

Air Fair: Through May 22. Through fun, interactive activities, kids and adults can investigate how air affects different objects and playfully discover the powers and properties of moving.

These deals are just for our readers...you must mention P:WA to take advantage of them!

Dear EarthTalk: As I understand it, “clean” coal really isn’t—yet the Bush Administration pushed strongly for it. What is Obama’s take on it? -- John Zippert, Eutaw, AL

Dear EarthTalk: Do insulating paints actually insulate and save energy? If they do, are they environmentally friendly to use? -- Bob Dibrindisi, Easthampton, MA

Dear EarthTalk: What effects do fertilizers, pesticides and herbicides used on residential lawns or on farms have on nearby water bodies like rivers, streams—or even the ocean for those of us who live

Dear EarthTalk: What kind of job opportunities might be opened up by the new federal emphasis on green projects? -- Dick Wetzler, St. Paul, MN

Dear EarthTalk: I’m sure there are many good environmental reasons to build a rooftop garden. Can you enlighten?

Dear EarthTalk: I haven’t heard much of late about big oil spills like the infamous Exxon Valdez. Has the industry cleaned up its act, or do the media just not report them? -- Olivia G., via e-mail

Dear EarthTalk: I’d like to know the relative electricity cost of utility scale solar and wind plants versus rooftop residential solar.