Back the line a bit, Donuel said...

"I just surfed onto Fox news and they had a kid who was testifying that global warming is a hoax, junk science and a scandal that makes the oil for food scandal tiny in proportion. He said the CO2 in the atmoshere is only a tenth of one percent."

The 'kid' being quoted is off a bit. The generally accepted figures are 0.29% CO2 before the Industrial Revolution in the mid 1800's. Now it is 0.38%. These figures are also expressed as PPM or 'parts per million', an unfortunate term for a folk music forum where 'Peter, Paul & Mary' are more likely the topic!

Will 0.38% CO2 cause a significant increase in global temperature over the previous 0.29%? Very unlikely.

One benefit is an increase in plant growth and vigor, since plants take in CO2 and return oxygen. More plants, healthier plants, more O2 is returned the the atmosphere. Also more food for starving people around the world. Sounds good, actually.