Earth's atmosphere hasn't had this much CO2 in millions of years
Jun 5, 2025 · Earth’s atmosphere now has more carbon dioxide in it than it has in millions — and possibly tens of millions — of years, according to data released Thursday by the National …
CO2 levels just broke another record. Here's what that means
Jun 7, 2025 · For 67 years, the observatory on Hawaii's Mauna Loa volcano has been taking these measurements daily — tracking the invisible gas that is building up in our atmosphere …
It's been millions of years since Earth's atmosphere had this ...
New reports out of the NOAA and Scripps Institution of Oceanography suggest that the carbon dioxide (CO2) levels in Earth's atmosphere haven't been this high in millions of years.
Earth’s atmosphere hasn’t had this much CO2 in millions of ...
4 days ago · Challenges to Human Society and Adaptation The rapid increase in CO2 levels presents unprecedented challenges, as human civilization has developed under much lower …
Earth's Atmosphere Reaches Highest CO2 Levels in Millions of ...
Jun 5, 2025 · By 2.5 million years ago, CO2 levels had dropped to around 270-280 ppm, ushering in a series of ice ages. This level persisted until humans began burning fossil fuels on a large …
Atmospheric CO2 Levels Haven't Been This High in 14 Million ...
Dec 8, 2023 · A new review of ancient atmospheric carbon dioxide levels and corresponding temperatures asserts that long-term climate is highly sensitive to greenhouse gas, with …
Scientists Warn The Atmosphere Hasn't Been Like This in 14 ...
Dec 8, 2023 · Until the late 1700s, atmospheric carbon dioxide was about 280 ppm, meaning humans have already caused an increase of about 50 percent of the greenhouse gas, which …