Morning Edition - Thursday, April 24, 2008

America's Host: Renee Montagne.  Newscasts: Paul Brown, Giles Snyder
Northern California Host: Donna Apidone.  Newscasts: Steve shadley

StoryCorps, NPR's oral history project, is in Sacramento.  For information, visit capradio.org.

All the Democratic members of Congress are superdelegates.  Their votes may be crucial in deciding the Democratic presidential nominee.  But choosing between Democratic candidates Hillary Clinton and Barack Obama has proven difficult for some undecided members of the House and Senate. Now that the Pennsylvania primary has played out, where do the congressional superdelegates stand?  We'll find out at 6:10 and 8:10.

A team of scientists in Canada has developed an efficient way to produce heart cells from human embryonic stem cells, a significant step for potential organ repair. But the study must move to trials with laboratory animals before the cells can be used with human patients.  That's at 6:40 and 8:40.

Host Renee Montagne talks with California's Poet Laureate, Al Young, in celebration of National Poetry Month. The San Francisco-based poet-novelist-essayist writes about and plays blues music and will read from his book "Something About the Blues," his newest collection of poetry that also includes a CD.  This morning at 7:50.

Thanks for listening.