It has happened. For the first time, atmospheric carbon dioxide levels at Mauna Loa Observatory in Hawaii passed a daily average of 400 parts per million. There is now more carbon dioxide in the ...

An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever seasonal peak concentration of the greenhouse gas. For the first time, ...

The average level of carbon dioxide in the Earth’s atmosphere had its largest one-year increase on record between 2023 and 2024. In 2024, the level reached 423.9 parts per million, an increase of 3.5 ...

Surging emissions from wildfires may have been behind the increase, which was the largest since modern measurements began more than half a century ago. By Raymond Zhong and Sachi Kitajima Mulkey The ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Growth rates of carbon dioxide have tripled since the 1960s, ...

Atmospheric concentrations of carbon dioxide made history last month by climbing to their highest seasonal peak available in historical records, a team of researchers reported. For the first time ever ...

This volleyball-looking device is one of the glass flasks that Charles D. Keeling and others used to transport samples of atmosphere from Mauna Loa and beyond to a laboratory for precise analysis.

Greenhouse gas concentrations increased by a record amount in 2024 as more carbon dioxide, methane and nitrous oxide became locked in Earth's atmosphere, a World Meteorological Organization report ...

This story originally appeared on the Bulletin of the Atomic Scientists and is part of the Climate Desk collaboration. There are trillions upon trillions of numbers in the world. We use numbers to ...

The basics of photosynthesis are something that every student learns in school: carbon dioxide, water and light in; oxygen ...