Exif II* & 1 " A new study uses aquatic leaf waxes to study the history of precipitation at this lake in Western Greenland. Photo: Jason Briner Adobe Photoshop CC 2015 (Windows) The remains of aquatic plants collect at the bottom of lakes such as this one in western Greenland. The wax coatings on these leaves reveal information about the seasonality of precipitation — how amounts of ancient summer rain compared to amounts of ancient winter snow. Photo: Jason Briner http://ns.adobe.com/xap/1.0/
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