Let's chat to our special guest who's well versed in water issues -- Doug Baker, CEO and chairman of Ecolab.

1. China's earmarked 63 billion dollars in the 13th Five-Year Plan (2016 – 2020) to solve water problems – come out with tougher rules on water pollution, where do you see the biggest issues? What's Ecolab doing to be part of the solution?

2. What’s the best approach towards water treatment and conservation at the moment?

3. Ecolab believes that if current trends persist, by 2030 – around three quarters of the world's biggest economies would be in "high water stress" – why aren't governments (around the world, excluding China) doing anything now?

4. What made Bill Gates' investment vehicle Cascade Investment and his Foundation invest so much in Ecolab?