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The Breathing Earth

From NASA, an animation of the yearly cycle of the Earth’s plant life. The data is taken from satellite measurements (plant density for land and chlorophyll concentration for the ocean) and averaged over several years.

From December to February, during the northern hemisphere winter, plant life in the higher latitudes is minimal and receives little sunlight. However, even in the mid latitudes plants are dormant, shown here with browns and yellows on the land and dark blues in the ocean. By contrast the southern ocean and land masses are at the height of the summer season and plant life is revealed with dark green colors on the land and in the ocean. As the year progresses, the situations reverses, with plant life following the increased sunlight northward, while the southern hemisphere experiences decreased plant activity during its winter.

If you’re anything like me, about 2-3 times into the video’s cycle, you’ll be breathing in tune to the Earth. Oxygen in, carbon dioxide out. Carbon dioxide in, oxygen out. Oxygen in, carbon dioxide out… (via @EricHolthaus)