Greenland ice found at risk of melting at CO2 levels lower than today’s
[ad_1] 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…