drinking water

Female executives are a rarity in the energy industry. But Lynn Good, CEO of Duke Energy, took the helm of the utility giant just as it was grappling with some very public challenges.

Recent water-related problems in Los Angeles and Ohio have put a focus on infrastructure. Many of the pipes in the U.S. are more than 100 years old and may not be replaced for another 100 years.

Ohio farmers say they are not the only ones to blame for Toledo's polluted drinking water. They say they are using only as much fertilizer as they need to grow their crops.

Removing bacteria and other impurities from water could be done more cheaply thanks to researchers at MIT. They're taking advantage of the way trees move water to filter it.

Improving access to clean water can reduce the spread of diarrheal diseases in developing countries. The "Drinkable Book" should help: It has water safety tips and each page works as a filter.