The Planet Just Crossed Another Major Carbon Milestone
Antara Foto Agency/Reuters Students walk along a hazy street in Jambi, Indonesia, on Sept. 29, 2015. The World Meteorological Organization reported Monday that carbon concentrations surpassed 400 parts per million last year for the first time. We are barreling toward the planet’s boiling point. Lydia O’Connor Reporter, The Huffington Post Last year’s average carbon dioxide concentration crossed