According to researchers from the Massachusetts Institute of Technology, ” by 2050 more than half the world’s population will live in water-stressed areas and about a billion or more will not have sufficient water resources. “
” (…) The researchers expect 5 billion of the world’s projected 9.7 billion people to live in water-stressed areas by 2050. They also expect about 1 billion more people to be living in areas where water demand exceeds surface-water supply. “
The threat is, as you can imagine, to be exarcebated by global warming and increasing water demand. Lucky us, there are solutions to both problems.