Improving water management could significantly narrow the gap between food production and food demand globally by mid-century, a new study found. Beijing pledged to clean up waterways polluted with untreated sewage by 2018, and officials in Tanzania warned that untreated sewage in Lake Victoria threatens the health of communities. Fiji became the first country to ratify the Paris climate change agreement. Officials in the United States diverted flood waters from the Everglades to save wildlife.

“Smart water use can boost agricultural production – we’ve in fact been surprised to