Yesterday I wrote about the possibilities of new technology. But it is of crucial importance that we learn to preserve and protect the resources we already have. The New York Times reports on the alarming rate of top soil loss in Iowa. Top soil erosion means that soil has to be pumped up with chemical fertilizers and the run-off from these fertilizers pollutes the water supply. Also, top soil helps to capture carbon so without it more carbon is released into the atmosphere, thus contributing to rising temperatures and climate change. One way to avoid erosion is by the use of no-till farming. Here is a video from the farmer’s perspective.