Sometimes I read climate science reports and they make my head spin. The complexity of the chemical/biochemical/physical interactions between air/water/land is difficult at best. It takes incredible knowledge, problem solving and critical thinking to be able to measure global changes accurately. Even then, scientists like to have methods to double check. Here’s an interesting apporach – measuring sea ice by gravitation.
Check it out.
http://www.nature.com/ngeo/journal/vaop/ncurrent/pdf/ngeo694.pdf

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