South Pole Breaks Carbon Dioxide Record

[From NOAA] In late May the South Pole broke through carbon dioxide concentration measurements of over 400 parts per million (ppm). This threshold is thought not to have been passed in more than 4 million years. A symbolic moment, the South Pole observatory is the last climate-monitoring location on earth that has passed this 400ppm milestone. “Since emissions from fossil fuel burning have been at a record high during the last several years, the rate of CO2 increase has also been at a record high. And we know some of it will remain in the atmosphere for thousands of years,” said Pieter Tans, the lead scientist of NOAA's Global Greenhouse Gas Reference Network... (Continue reading)