Rising Sea Levels on Louisiana's Coast Causing Residents to Flee

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NEWS DESK | Water is rapidly encroaching on Louisiana's coastline, causing it to lose a football field of land by the hour and forcing its residents to consider abandoning their homes. Senior national correspondent Michael Shure has the story. 


Story: 


The concept of a carbon budget is dead simple: figure out how much CO2 humanity can pump into the atmosphere without pushing Earth's surface temperature beyond a dangerous threshold.
The 2015 Paris climate treaty enjoins the world to set that bar at "well below" two degrees Celsius (3.6 Fahrenheit) in order to avoid an upsurge in killer heatwaves, droughts and superstorms made more destructive by rising seas.
Last year, the UN's climate science body concluded this already hard-to-reach goal may not be ambitious enough.
Only a 1.5C cap above pre-industrial levels, for example, could prevent the total loss of coral reefs that anchor a quarter of marine life and coastal communities around the globe, the Intergovernmental Panel on Climate Change (IPCC) said in a landmark report.
But calculating exactly how much CO2 -- produced mainly by burning fossil fuels but also deforestation -- we can emit without busting through either of these limits has been deceptively hard to calculate.
Indeed, scientific estimates over the last few years have differed sharply, sometimes by a factor of two or three.

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