This monsoon season saw large parts of India are smarting under a wave of floods that have brought bustling metropolises such as Delhi and Mumbai to their knees. Hundreds of acres of land remained submerged for weeks on end by overflowing rivers from Himachal Pradesh to Assam. It is easy to be dazed by the impact of climate change that has reached our homes. But everyone—governments, companies, politicians, and consumers—needs to act now.