I read that cutting the rain forest is part of causing global warming, because trees absorb Co2, and greenies say we should plant trees. Well, here is an article that says trees can cause warming.
"Although temperatures have risen throughout the globe, they've gone up most dramatically in the Arctic. Past warm periods indicate that deciduous tree (deciduous trees lose their leaves in the winter) expansion into the Arctic is a common occurrence when the region warms up, so a new study has looked into the impact trees could have on the regional climate.
As expected, the increase of the leafy trees would result in less reflective ground, but the study suggests they could also induce more cloud cover and an increasingly warm surface and ocean that have more turbulent weather patterns. The simulation indicated that the expansion of leafy trees, by their ability to increase water vapor and absorb light, would result in an increase of the surface temperature in the Arctic region of about a Kelvin (1K is about 1.8 degrees Fahrenheit) over the next 20 years. " Taken from ARS Technica Dec, 30, 2009. Trees cause clouds, warm up the earth and are bad - trees are good and eat Co2. Hmmm, The trees I sit under in the summer seem to cool me off quite nicely and their leaves drop in the fall, so they don't block the sun in the winter.