Funding Flows to Water Tech Firm

Is a low-energy solution to water shortages an idea worth investing in? Some of the top venture capitalists and companies in the world seem to think so. Khosla Ventures, BASF and others have poured $60.5 million into NanoH2O, which is selling a desalination system the company claims uses 20 percent less energy to operate than others. Seems like a good idea.
Funding Flows to Water Tech Firm