Tar sands crude is both more toxic and much harder to clean than ordinary oil.
President Obama has the power to make the transformation to a clean-energy economy.
Throwing the nation over the climate cliff will make our current fiscal challenges look like a minor bump in the road.
We must hold him accountable for living up to his visionary rhetoric and call him out on the shortsightedness of his energy policy.
Sandy is only the latest and most devastating incident in a pattern of extreme weather that's become impossible to ignore.
Why isn't anyone laughing anymore?
If Wall Street doesn't get Mother Nature's hint, it will become the entire world's tragedy.
Global warming can't be legislated away.