Given today's (Jan. 20) announcement that the year 2015 was by far the warmest on record for Earth, it's a good time to check current carbon dioxide readings. An ever-increasing CO2 content in our ...

On May 9, instruments atop Hawaii’s Mauna Loa volcano pegged the atmospheric concentration of carbon dioxide (CO2) — the gas that contributes most to global warming — at slightly above 400 parts per ...

Attribution researches the influence of climate change on local weather and impacts. We issues alerts in many instances when the Climate Shift Index identifies a notable extreme weather event around ...

In May 2013, the carbon dioxide monitoring station at Mauna Loa, Hawaii, recorded a major milestone — the concentration of atmospheric carbon dioxide had crossed the symbolic “red line” of 400 parts ...

An instrument near the summit of Mauna Loa in Hawaii has recorded a long-awaited climate milestone: the amount of carbon dioxide in the atmosphere there has exceeded 400 parts per million (ppm) for ...

The Global CO 2 Threat Level Indicator allows users to monitor carbon dioxide levels worldwide, utilizing a simple online meter. Changes through time are also vividly displayed. Climate-KIC has ...

The amount of carbon dioxide in Earth’s atmosphere has officially surpassed levels seen in the entirety of human history, topping the highest point previously recorded in 800,000 years of data by more ...