Lead Pipes

It's the first time global data has been gathered on the extent of the problem. Experts are calling it a "groundbreaking" report. And the ill effects can last for a lifetime.

The Colorado seventh-grader was unimpressed by the options her parents had to test water in their home. So she created a sensor-based device using chemically treated carbon nanotubes to do it faster.

The Ohio Environmental Protection Agency says half of the state's public drinking water systems are in danger of missing a deadline requiring them to map…