In 2023, atmospheric carbon dioxide (CO₂) levels hit 420 parts per million (ppm)—the highest in 3 million years, per NOAA’s Mauna Loa Observatory. This milestone confirms human activity drives climate change, with no natural dip matching the current rise. #RealScience #ClimateFacts #NOAA #VerifiableNews #ClimateAction
3 months ago
