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.

Carbon dioxide is accumulating in the atmosphere faster than ever—accelerating on a steep rise to levels far above any experienced during human existence, scientists from NOAA and the Scripps ...

As humans burn fossil fuels and pump carbon dioxide into the atmosphere, we are heating up the planet. But there is another alarming impact of this climate pollution: it may be changing the chemistry ...