From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.
MELISSA BLOCK, HOST:
And I'm Melissa Block.
The President of the U.N. General Assembly said today that at least 80,000 people have been killed in Syria's two-year civil war, and that most of those casualties were civilians. The assembly also approved a resolution today calling for Syrian President Bashar al-Assad to step aside. But that vote was largely symbolic; the resolution is unenforceable.
It's been one month since a pair of bombs exploded near the finish line of the Boston Marathon, killing three and wounding more than 260. NPR's Joel Rose returned to the scene today and found Bostonians observing the somber occasion with little fanfare.
Climate change is gradually altering the fish that end up on ice in seafood counters around the world, according to a new study.
"The composition of the [global] fish catch includes more and more fish from the warmer areas, and cold-water fish are getting more rare, because the temperatures are increasing," says Daniel Pauly at the University of British Columbia, a co-author of the study.
Scientists say they have, for the first time, cloned human embryos capable of producing embryonic stem cells.
The accomplishment is a long-sought step toward harnessing the potential power of embryonic stem cells to treat many human diseases. But the work also raises a host of ethical concerns.
A serial killer who committed suicide in an Alaska jail last year confessed to murdering at least 11 people across the country. But Israel Keyes didn't name names, and investigators trying to figure out who he killed are running into a major stumbling block: There is no unified, mandatory national database for missing persons.
Nearly 700 presidential hopefuls have thrown their names into the ring for Iran's June 14 presidential elections. But two last-minute entrants have altered the shape of the already-chaotic race: a former president once dismissed as a has-been and Iran's chief nuclear negotiator.
