Union Minister Piyush Goyal said that the threat of climate change is real and dangerous and the country has to move towards a world of net-zero carbon emissions. "We ultimately have to move towards a world where we are net zero in terms of carbon emissions. The threat of climate change is very real, near and dangerous," Goyal said at the Sustainability Summit on Circular Economy for Self-Reliant India organised by the Confederation of Indian Industry via video conferencing. He added, "When we introduced mechanised cleaning of trains, we brought down consumption of water by 90 per cent. Since it is in a mechanised manner, out of the 10 per cent water we use, we are able to recycle 6 per cent. Effectively, our water consumption came down to barely 3-4 per cent."