Storm spotters keep their eyes on the skies As the temperatures rise, so does the chance for severe weather. There are some people who don't wait for the sirens to sound as they track potentially dangerous storms. They are specially trained volunteers with a storm spotting group called Metro Skywarn.7:25 a.m.
St. Paul Art Crawl opens You can see -- and buy -- everything from stained glass to sculpture during St. Paul's annual Art Crawl. The capitol city's weekend-long movable feast of art opens Friday evening in the Lowertown neighborhood. Morning Edition arts commentator and St. Paul Pioneer Press theater critic Dominic Papatola offers some tips on how to traverse the 25th annual crawl with style.8:25 a.m.
National Public Radio Stories
Hundreds of Superdelegates Remain Undecided
Hillary Clinton says the tide has turned now that she beat Barack Obama in Pennsylvania's Democratic presidential primary, but the race is still likely to be decided by superdelegates. The superdelegates include all Democrats in Congress, and they have mixed feelings about their roles as king- or queen-makers.
Hoosier State Prepares for Important Primary
In the ongoing battle to earn the Democratic presidential nomination, the primary race now moves to Indiana and North Carolina, states that host primaries on May 6. Indiana, however, is where the race appears to be closest between Sens. Hillary Clinton and Barack Obama.
U.S. Officials Tie N. Korea to Syrian Nuclear Site
U.S. intelligence officials say they have evidence that Syria was getting help from North Korea in building a nuclear reactor. The suspected site was bombed by Israeli war planes last year. Intelligence officials brief members of Congress about the facility Thursday.
Beetle Infestation Compounds Effects of Warming
In western Canada, tree-infesting beetles are flourishing due to warmer temperatures caused in part by global warming. But a new study in the journal Nature argues that these pests may also be compounding the effects of climate change by destroying the trees that suck key pollutants out of the atmosphere.
Scientists Find Efficient Way to Grow Heart Cells
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.
Doctors Get a Crash Course in Healthful Cooking
Chefs at the Culinary Institute of America have teamed up with Harvard's medical school to show Americans how to make healthful food instead of quickie meals of pizza or taquitos. And they're starting with physicians.
Starbucks Links Slowing Sales to Housing Downturn
Starbucks executives on Wednesday warned investors that sales are slowing and the company faces the weakest economic environment in its history. They blame the housing market. Sales were especially slow in California and Florida, which account for nearly one-third of the coffee chain's U.S. revenues.
Apple Stock Falls Despite Quarterly Gains
Apple's fiscal second-quarter earnings jumped higher than analyst estimates as computer and iPod revenue boosted the company's profits. The computer and music giant's second-quarter profits totaled more than $1 billion, compared with $770 million in the same quarter last year.
Spain's Housing Bubble Bursts
In the past decade, housing prices in Spain have tripled. But now the housing bubble has ended, leaving home developers and buyers at a standstill as monthly mortgage payments soar.