ScienceFirst In 4 Million Years: CO2 Rates In Antarctica Hit 400 PPM On May 23, the planet reached a new climate change milestone. For the first time in 4 million years, Earth's carbon dioxide concentrations at the South Pole hit 400 parts per million.by Katherine Derla
ScienceAtmospheric Carbon Dioxide Levels Surpass Limit: Could This Spell A Grim Future?by Katrina Pascual
ScienceWorld's Space Agencies Agree To Use Satellites To Monitor Greenhouse Gas Emissionsby Rina Marie Doctor