Dr. Mona Hanna-Attisha exposed the lead high lead levels in Flint, Michigan's tap water, using the medical records of children with the levels of lead in their blood. The state tried to discredit her research. She persisted.
Concerns over energy resources aside, economists say a global shortage of water would curtail the world's ability to raise food — perhaps by 2025. Fred Pearce is an environmental and development consultant at New Scientist. His new book is When the Rivers Run Dry.
Professor Thomas Naff of the University of Pennsylvania and head of the Middle East Water Project. He discusses the overwhelming importance of water in the Middle East; water beneath the Ocupied Territories may be a factor in the Israeli government's refusal to cede lands to the Palestinians.