I’ve been thinking, if rising CO2 levels are a major cause of global warming and we are rapidly loosing the only natural source of CO2 processing – rain forests, can we create something that will replace that functionality? Obviously the first thing we need to do is stop the destruction of the rain forests.  After that the best thing we can do is restore them back to their original state.  Since no one seems to be able to accomplish either of those goals, would it be possible to build farms of “artificial rain forests”?  The idea is to have small machines that can perform some kind of artificial photosynthesis or something that can remove the CO2 from the air.  These machines could hopefully be powered by solar panels and/or wind turbines.  Such farms could be installed on building rooftops and empty lots for example.