Irish Times: As global carbon dioxide, emissions teetered on the threshold of 400 parts per million (PPM) for the first time in three million years, delegates from countries all over the world yesterday started another round of talks on how to tackle climate change.
Hawaiis Mauna Loa Observatory recorded CO2 levels of 399.72ppm last week. It looks like the world is going to blow through the 400ppm level without missing a beat, said Ralph Keeling of the US Scripps Institution of Oceanography, which runs...