May 22, 2013 — While studying microorganisms on humans is not new, tracking fungi is. In a census of sorts, scientists checked the skin of healthy volunteers. They found an expansive ecosystem of silent inhabitants.

May 22, 2013 — For the first time, the Justice Department admits that it targeted American-born al-Qaida leader Anwar al-Awlaki and that three other U.S. citizens have died in drone strikes.

May 22, 2013 — What was billed as an informational meeting turned into a counseling session and a chance to recognize principals, teachers and support staff who stepped up in the crisis.

May 22, 2013 — The IRS bureaucrat showed up long enough at a House hearing into the scandal engulfing her agency to declare her innocence and her constitutional right to say no more.

May 22, 2013 — In 2011, police detained Ai Weiwei for 81 days. Now, he's released a song that's turned the experience into a heavy metal protest song, along with a dystopian nightmare video. The lyrics are explicit and angry. Ai says his music is for the many political prisoners who remain jailed.