The state of the Arctic: High temperatures, melting ice, fires and unprecedented emissions
NBC News reports: The Arctic just experienced its second-hottest year on record. And concerningly, the region’s tundra has transitioned from being a sink for carbon to a source of emissions as permafrost melts to release methane. That will only amplify the amount of heat-trapping gases that enter the atmosphere, paving the way for further warming. The findings, shared Tuesday in the National Oceanic and Atmospheric Administration’s Arctic report card, show how climate change is scrambling ecosystems and shape-shifting the landscape…