Still, you can always only go so far with efficiency gains - they are important, but should not be depended on instead of looking for new cheap & clean energy s

Still, you can always only go so far with efficiency gains - they are important, but should not be depended on instead of looking for new cheap & clean energy sources. And there are also some technologies, that while very energy hungry, can help fix many of the pressing world problems (large scale desalination, plasma waste processing, large scale CO2 capture, various benefiting megaprojects, etc.).