Christian Science Monitor: With fresh water resources becoming scarcer worldwide due to population growth and climate change, a growing movement is working to make access to clean water a basic universal human right. But it’s a contentious issue, experts say. Especially difficult is how to safely mesh public-sector interests with public ownership of resources — and determine the legal and economic ramifications of enshrining the right to water by law. “It’s an issue that is snowballing,” says Tobias …