Experts: CO2 Record Illustrates ‘Scary’ Trend

By SETH BORENSTEIN | May 14, 2013

  • May 14, 2013 at 2:43 pm
    Chilly says:
    Like or Dislike:
    Thumb up 1
    Thumb down 0

    The current levels of carbon dioxide in the earth’s atmosphere, approaching 400 parts per million, are low by the standards of geological and plant evolutionary history. Levels were 3,000 ppm, or more, until the Paleogene period (beginning about 65 million years ago). For most plants, and for the animals and humans that use them, more carbon dioxide, far from being a “pollutant” in need of reduction, would be a benefit. This is already widely recognized by operators of commercial greenhouses, who artificially increase the carbon dioxide levels to 1,000 ppm or more to improve the growth and quality of their plants.
    http://hockeyschtick.blogspot.com/2013/05/distinguished-physicist-dr-william.html



Add a Comment

Your email address will not be published. Required fields are marked *

*