Greenland ice found at risk of melting at CO2 levels lower than today’s
As we focused our microscope on the soil sample for the first time, bits of organic material came into view: a tiny poppy seed, the compound eye of an insect, broken willow twigs and spikemoss spores. Dark-coloured spheres produced by soil fungi dominated our view. These were unmistakably the remains of an arctic tundra ecosystem…
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