On Tuesday, wattsupwiththat posted an article about increased levels of CO2.

The article reports:

One of the more commonly-stated concerns linked to “global warming” is that sweltering heat will parch the terrestrial landscape (browning), limit vegetation growth, and foment water shortages – even widespread drought.

However, a new study suggests the Earth’s rising CO2 concentration has the exact opposite effect in the real world.

In their extensive trend analysis spanning the last few decades, the scientists determined elevated CO2 was the single most “dominant driver” (accounting for 45% of the correlation) when assessing the link between reducing vegetation water demand and improved water use efficiency.

Compared to CO2, temperature and precipitation, for example, play a far less significant role (10-11% of the correlation) in influencing the trend in improved vegetation growth and water use efficiency.

“The CO2 fertilization effect has benefits for both vegetation growth and water use efficiency (WUE).”

“…elevated CO2 concentrations could indirectly enhance water availability by improving [water use efficiency]…reducing vegetation water demand.”

Please follow the link to the article. The science here is way above my pay grade, but I will say that I have heard other scientists say this. As CO2 levels rise, there will be more than enough food to feed the planet as long as man and politics get out of the way.