In his State of the Union address, President Obama touted his "all of the above" energy policy which was bemoaned by some environmental groups who are upset with his embrace of natural gas as a "bridge fuel" to a clean energy future.
Jan 30, 2014 Huff Post Green
Analysts have noted a change in the president on climate change in his second term. Call it a "message shift". Rather than addressing it in terms of the need for clean energy and renewables, he now speaks directly to the perils of climate change.
Jul 11, 2013 The Hill
In this Newshour video (with transcript), spokesmen from a liberal and conservation think tank debate each other on the feasibility of transitioning to clean, green energy from the current fossil fuel powered economy in light of the Gulf disaster.
Jun 19, 2010 PBS NewsHour