A surprise mention of the controversial Keystone XL pipeline threatened to overshadow the President's announcment of his administration's long awaited climate change action plan, which is centered on limiting greenhouse gas emissions from existing power plants.
Niala asks two experts if it is too late to turn back climate change. An allergist discusses how climate change can actually affect seasonal allergies. Then: is it 2008 all over again? Housing market trends may point to a bubble on the horizon.
Some environmentalists warn that a recent federal report on greenhouse gases doesn’t tell the full story. The Environmental Protection Agency says natural gas producers have significantly reduced emissions of methane, a potent heat-trapping gas that could decide whether the fossil fuel is a viable short-term option for fighting climate change.