Environmental

Texas A&M's Yige Zhang co-authored new study proving Earth's carbon dioxide atmospheric concentrations averaged 230 parts per million for 2.5 million years; today's levels are about 410 parts per million
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Texas A&M's Yige Zhang co-authored new study proving Earth's carbon dioxide atmospheric concentrations averaged 230 parts per million for 2.5 million years; today's levels are about 410 parts per million