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Yeah, Right

 BY T.M. ASHBY, CALGARY HERALD DECEMBER 9, 2011
 
Re: "Carbon good," Letter, Dec. 7.

Where did Dave W. Reesor get his information? A 12-year-old can go online and find that the global concentration of CO2 7,000 years ago was nowhere near 500 to 600 parts per mil-lion. It was even lower than the present, as evidenced from ice-core data.

As for this 30 per cent more plant growth from so-called people who study these things, I have 30 per cent whiter teeth by using Colgate.

T.M. Ashby, Calgary

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