I want to know the answer to the following question:
Which newspaper printed an op-ed piece that questioned Immelt's credibility as a spokesman on environmental policy?
All the background I'm provided with is that "In May 2005, GE announced the launch of a program called "Ecomagination," intended, in the words of CEO Jeff Immelt "to develop tomorrow's solutions such as solar energy, hybrid locomotives, fuel cells, lower-emission aircraft engines, lighter and stronger durable materials, efficient lighting, and water purification technology".". Is that enough to answer the question?