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.