One of the crucial highly effective earthquakes ever recorded struck the east coast of Russia, triggering tsunami warnings throughout the Pacific. NBC Information meteorologist Invoice Karins joins visitor host Andrea Mitchell to elucidate the science behind the quake. And College of Pennsylvania local weather scientist Dr. Michael Mann joins to debate the Environmental Safety Company proposal to repeal the “endangerment discovering.” It’s a 2009 rule that decided that greenhouse gases like carbon dioxide endanger public well being and welfare.
