"The 21st century will witness the collision of two powerful forces - burgeoning population growth coupled with a changing climate. With population growth, water scarcity will proliferate to new areas across the globe. With climate change, rainfall will become more fickle, with longer and deeper...

The 21st century will witness the collision of two powerful forces - burgeoning population growth, together with a changing climate. With population growth, water scarcity will proliferate to new areas across the globe. And with climate change, rainfall will become more fickle, with longer and...