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35 Years of Shrinking Arctic Ice, All in One Graphic

The fingerprint of climate change is as visible here as the big letters on an eye chart.
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The melting of the Arctic has been so gradual and far-off it's hard to comprehend the huge amount of ice that has vanished. But with this NASA visualization, seeing the disintegration of the polar region is as easy as reading an eye chart with 20/20 vision.

The graphic shows Arctic sea-ice extent for most months dating back to the late 1970s, based on images from the National Snow and Ice Data Center. Years run across the top, months are plotted downward. "By glancing at the image, the viewer can quickly see the periods during the year when north pole sea ice extent is at minimum and maximum," writes NASA. "It is also easy to see how the sea ice has changed over the years."