Many states want to increase the amount of electricity that comes from wind and solar energy. One challenge is that renewables are not reliable. The wind doesn't always blow, the sun doesn't always shine. So companies are now trying to develop better ways to store energy.
New Hampshire Public Radio's Sam Evans-Brown reports on a company that is working on a storage system that uses compressed air.
If there is one thing that the mobile-computing era has made clear, it's that kids love touch screens. Because those touch screens — smartphones, iPads, Kindles and the like — are an inevitable added distraction to the classroom, schools across the country are struggling to deal with the growing prevalence of the technology.
But a growing number of schools are embracing these hand-held, Internet-ready devices by creating policies that put them to use in the classroom.
From NPR News, this is ALL THINGS CONSIDERED. I'm Robert Siegel. Athletes all over the country are competing to secure their places on the Summer Olympics team. At the same time, Winter Olympians are doing what they can to stay in shape. For cross-country skiers, that means roller skiing. New Hampshire Public Radio's Sam Evans-Brown reports roller skiing has become a competition sport in its own right.