Across the northern reaches of our planet, things are so cold that nearly 9 million square miles (23 million square kilometers) of earth remain frozen solid year-round. But that’s changing as the climate warms, and as that permafrost thaws, it releases trapped greenhouse gases from the soil. Scientists warn that…
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Source : Permafrost Thaw Could Unleash Long-Buried Pathogens and Radioactive Waste
