DigitalHappy Earth Day!By Christine|April 22, 2009ShareBy Christine|April 22, 2009ShareSecretary of Energy Steven Chu and Secretary of Labor Hilda Solis penned an op-ed “Building the American Clean Energy Economy” to commemorate Earth Day. According to a White House press release, the piece ran in the following newspapers and you can check it out in the Denver Post here:Austin American-StatesmanBuffalo NewsDenver PostMontgomery AdvertiserOmaha World HeraldPittsburgh Post-Gazette Adweek Adweek