Sam Evans-Brown en Common Core Standards Could Knock As, Bs And Cs Off Report Cards Transcript <p>MELISSA BLOCK, HOST: <p>Most of today's students and their parents are used to report cards based on the letters A through F. But a new grading system is taking root in schools across the country. It's called standards-based grading. The point is to give parents more information, as New Hampshire Public Radio's Sam Evans-Brown reports.<p>SAM EVANS-BROWN, BYLINE: Here's what we know about grades in America: A is good, F is bad. Mon, 09 Dec 2013 22:33:00 +0000 Sam Evans-Brown 18806 at Energy Start-Up Banks On Compressed Air Over Batteries Transcript <p>STEVE INSKEEP, HOST: <p>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.<p>New Hampshire Public Radio's Sam Evans-Brown reports on a company that is working on a storage system that uses compressed air.<p>SAM EVANS-BROWN, BYLINE: It's pretty easy to see how energy stored as compressed air works. Fri, 01 Mar 2013 10:16:00 +0000 Sam Evans-Brown 1068 at