The Day the World Didn't End
Last month when scientists switched on the Large Hadron Collider, the world did not come to an end. In today's story, a particle physicist explains why not--and why Earth is safe from black holes when the collider is reactivated in the months ahead. + Read More + Listen to Story
How Round is the Sun?
Scientists using NASA's RHESSI spacecraft have measured the roundness of the sun with unprecedented precision, and they find that it is not a perfect sphere. During years of high solar activity the sun develops a thin "cantaloupe skin" that significantly increases its apparent oblateness. + Read More + Listen to Story +
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Pollen Alert!
NASA is teaming up with public health organizations to create a pollen alert system that could help people with maladies ranging from common hay fever to serious heart and lung diseases. + Read More + Listen to Story +
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