Tharman Shanmugaratnam: We should remove subsidies for energy and diesel

"One of the reasons why so much groundwater is being extracted in agriculture in many countries us because energy is subsidized and the diesel is subsidized, it's often free in some farms, they're basically incentivized to just pump more and more groundwater. And now it's unsustainable. Now if you could price the energy it gives you the source of revenue that then enables you to subsidize the right type of farming..."