Tokyo, June 4: As climate change worsens, and with populations rising worldwide, water shortages are a top threat to human development and security. One in four people on Earth face shortages of water for drinking, sanitation, agriculture and economic development. Water scarcity is expected to intensify in regions like the Middle East and North Africa region, which has 6% of the global population but only 1% of the world’s freshwater resources. Conventional water sources – which rely on snowfall, rainfall […]