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Painter14's avatar

This is photosynthesis: 6CO2 (carbon dioxide) + 6H2O (water) --> C6H12O (one molecule of glucose) + 6O2 (oxygen)

For every molecule of CO2 a plant takes in through a single stoma (little leaf mouth), it loses 10 molecules of water. Abundant CO2 means a plant can reduce the number of stomata in the epidermis of its leaves and, therefore, use water more efficiently. Of course, we know CO2 is vital for photosynthesis and—as the trace amount of atmospheric CO2 gas rises—the Earth becomes greener, particularly in desert regions. Don't believe me, believe the NASA satellites. Any "greenhouse" contribution by CO2 is completely masked by water vapor. But let's not think of "greenhouse" conditions as a bad thing. Without that mechanism the Earth would be a frozen, barren rock. Water vapor is the real greenhouse gas while CO2 simply ensures the survival of all life on our planet. We really could use twice the amount. Earth is just 250 parts per million (0.025%) CO2 above the extinction of all life upon it. Anyone using the term "carbon pollution" is one of two things—an astounding liar, or an astounding ignoramus.

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misterkel's avatar

I have been a CAGW skeptic for about 12 years now. I have distilled it to 3 easy points:

CO2 has been much higher in the past: >4000ppm or 10 times as high.

The CO2 - warming correlation in Al Gore's mockumentary has heat preceding CO2 by 800 years in every cycle. This is agreed by all 'climate' scientists and the IPCC. Effect cannot precede cause, the absolutely most basic principle of science. This single point invalidates the entire premise.

The theoretical relationship between CO2 and heat is logarithmic, meaning a doubling of CO2 is required for each 1.5-2 C rise in temps. At this point, CO2 has risen by perhaps 25% since the industrial age. A true doubling (to 600ppm) is extremely unlikely, and a second beyond that (1200 ppm) is impossible.

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