The world’s three most populous countries include China, India and the United States and these nations alone account for 41 percent of the global population, 49 percent of blue water demand—defined as ...

Climate change has many signals—rising sea levels, melting glaciers, stronger storms—but the first and most immediate sign for most people on the planet is water. Not too much of it. Not too little.

Water scarcity is one of the most pressing development challenges of our time. Today, 2.4 billion people live in water-stressed countries. Many are smallholder farmers who already struggle to meet ...