One of the nation's most recognizable names in climate science, Dr. James Hansen, released a new paper this week warning that even 2 degrees Celsius of global warming may be "highly dangerous" for humanity.
The paper, which will be published online in the European Geosciences Union journal Atmospheric Chemistry and Physics Discussion later this week, projects sea levels rising as much as 10 feet in the next 50 years.
The paper notes there is evidence indicating that average temperatures just 1 degree Celsius warmer than today caused sea levels to rise 16 to 30 feet and fed extreme storms thousands of years ago.
Hansen and 16 co-authors drafted the paper as a message to policymakers that current greenhouse-gas reduction goals are not strong enough. World leaders have committed to limiting average warming to 2 degrees Celsius (3.6 degrees Fahrenheit), a goal articulated in the Copenhagen Accord in 2009 and reiterated by G7 leaders in June.
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