The healthy growth of mankind depends on continuously decreasing the cost of water and energy everywhere.Nice thought. Why mention it?Its a mission statement.For who?Microsoft founder Bill Gates and Berkshire Hathaway CEO Warren Buffett — and through them America’s billionaires. Why Bill Gates? Why Warren Buffett?As to Bill Gates, his passion; According to a recent interview Understanding science and pushing the boundaries of science is what makes me immensely satisfied. What I’m doing now involves understanding maths, risk-taking. The first half of my life was good preparation for the second half.’ Now in the context of the interview he was...