The world population is growing rapidly and is expected to reach 9 billion by 2050. While efforts are underway to ensure there's enough food, one scientist is warning there may not be enough water. Professor Stanley Grant said billions of people don't have adequate water supplies. That number will only get bigger, he says, unless something is done immediately. "There are drought conditions across the U.S. and in many parts of the world. So as our planet gets warmer we need more fresh ...
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