Study: 20,000 ppm CO2 sustained life on Earth 3 billion years ago
http://junkscience.com/2013/07/09/study-20000-ppm-co2-sustained-life-on-earth-3-billion-years-ago
“Solving the “faint young sun paradox” — explaining how early Earth was warm and habitable for life beginning more than 3 billion years ago even though the sun was 20 percent dimmer than today — may not be as difficult as believed, says a new University of Colorado Boulder study.” The media release is below. […]
