June 29, 2016 10:36 am Over 5,000 Water Systems Failing to Test for Lead The Natural Resources Defense Council reports more than 18 million Americans got their drinking water from systems with lead violations in 2015. US & World Videos 1:40 Democrats say Big Oil misled public for decades about climate change 4:14 What to expect: Previewing the 2024 Met Gala 3:37 Learning about the Art Resource Collaborative for Kids 3:25 Mother's Day gift ideas with William James Gifts 1:35 Understanding the Biden administration's plans to reclassify marijuana