Image NASA Eyes Earth

We all depend on the Arctic.. .
The Arctic regulates our climate, provides a home for wildlife, livelihoods, and food. (WWF)

The Arctic as switched from a net carbon sink to source (NOAA 2016)

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10 June 2019 Climate change drives widespread and rapid thermokarst development in very cold permafrost in the Canadian High Arctic
15 Aug 2018 21st-century modeled permafrost carbon emissions accelerated by abrupt thaw beneath lakes

 N.H FOOD SECURITY

The Arctic snow and summer sea ice cooling albedo is the 'air conditioner' of the entire Northern Hemisphere.

Its loss will affect the world's best northern hemsiphere food producing regions due to increased climate variability, extreme heat and drought, and damaging floods

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Has runaway Arctic warming already begun?
New Scientist (2009)