FILTRATION PROBLEMS

What a surprise! Carbon emissions into the atmosphere in the United States have had a dramatic fall...to a level last seen in 1991. The data from the EIA showed in the first quarter of 2012 that emissions generated by coal wrere at the lowest level since 1983. Another interesting statistic is that coal accounted for 51 percent of total US power generation in 2005 and last year it dropped to 43 percent.

Here is a picture of the largest living bio-filter in North America using hydroponics. This wall of plants is 23 meters high by almost 7 meters wide ...the network of vegetation grows hydroponically between two layers of a rough material and without soil.