Penn State hopes to reduce its health care costs by helping employees become healthier. But some faculty members complain that charging them $100 a month for refusing to participate in a health improvement program is unfair. Jeff Brady/NPR hide caption

Changes to the acidity of the Earth's ancient oceans affected the coral reefs more than 50 million years ago. And researchers are using that information to try to predict how the planet might fare in our rapidly changing climate. Above, the Wheeler Reef section of the Great Barrier Reef. Auscape/UIG via Getty Images hide caption

"We just thought we were telling this endearing story women could relate to," says HelloFlo founder Naama Bloom. Courtesy of HelloFlo hide caption

The front pages of the main Italian newspapers in Rome on Friday after Italy's top court upheld a jail sentence against former Prime Minister Silvio Berlusconi for tax fraud. Gabriel Bouys/AFP/Getty Images hide caption

Liza Long's son, 13, struggles with rage and violent outbursts. After the school shootings in Newtown, Conn., Long wrote a blog post advocating for better care for mentally ill youth. StoryCorps hide caption

The Martha's Vineyard beach where Heidi Feldman collects saltwater to make sea salt. Courtesy of Heidi Feldman hide caption