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Accused of copyright infringement and conspiracy, the file-sharing site's founder and three others are being held in a New Zealand jail. Meanwhile, the site has one webpage up and running.

Each tear you shed contains an army of enzymatic Pac-Men, ready to chase down and gobble up germs before they infect the sensitive tissues around your eye. Now scientists have found just one molecule of the germ-fighting enzyme is a potent defender.

Christie's New York today auctioned off a rare set of John James Audubon's Birds of America. It didn't come close to the record $11.5 million paid for another full set of the books in 2010. But it was still a hefty price.

Surgeons in Sweden replaced an American patient's cancerous windpipe with a scaffold built from nanofibers and seeded with the patient's stem cells. Lead surgeon Dr. Paolo Macchiarini discusses the procedure and the benefits of tissue-engineered synthetic organs.

Two projects aim to harness renewable energy using cutting-edge technology and engineering. AltaRock's Susan Petty discusses plans to turn hot rocks at a dormant volcano into a source of power. University of Maine's Habib Dagher talks about the potential of deepwater floating wind turbines.

Science historian Howard Markel discusses the origins of the word moon and some of the lore surrounding it, including a 1638 book by the English bishop Francis Godwin entitled The Man in the Moone, which recounts a science fiction-style voyage to the moon.

Scientists working with a highly contagious, lab-created strain of bird flu will suspend their research for 60 days. The pause will make possible an international debate on the merits of the work, they say.

Palestine might not seem like a breeding ground for race car drivers. But that hasn't stopped a group of Palestinian women from driving very fast, winning races and making a name for themselves along the way.

In his book Mindfulness: An Eight-Week Plan for Finding Peace in a Frantic World, Oxford University clinical psychologist Mark Williams talks about the brain and body benefits of mindfulness meditation, a cognitive behavioral therapy that can be as effective as drugs at staving off recurring bouts of depression.

The arrests in New Zealand of four people wanted by the U.S. for alleged online piracy raise a number of questions. NPR asks two experts for answers.