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Carbon dioxide in Earth's atmosphere reaches record high, researchers say

Breaking News EmailsGet breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.SUBSCRIBENov. 25, 2019, 12:40 PM UTCBy Denise ChowThe concentration of carbon dioxide in Earth’s atmosphere has reached a record high, according to a newly released report from the World Meteorological Organization.In 2018, global average concentrations of the greenhouse gas, which is a byproduct of burning fossil fuels, reached 407.8 parts per million, which means for every 1 million molecules of gas in the atmosphere, nearly 408 were carbon dioxide. This level is up from the global average of 405.5 parts per million in 2017. The findings follow a trend that shows the planet is continuing to warm at an alarming p ...
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