The bacteria use a natural molecule called naphthoquinone. This acts like a tiny shuttle for electrons inside the cell.
It said based on issuance volumes in first half of 2015, as well as expectations of continued offerings in China and India, green bond volumes for 2015 are highly likely to exceed and could even double last year's record volume of USD 37 billion.
Nearly 70 percent of country's irrigation and 80 percent of domestic water use comes from groundwater, which is rapidly getting depleted. However, overseas players from Canada, Israel, Germany, Italy, United States, China and Belgium sees big investment opportunity worth USD 13 billion in the domestic water sector.