Jeffrey Iliff (left), a brain scientist at Oregon Health & Science University, has been studying toxin removal in the brains of mice. He'll work with Bill Rooney, director of the university's Advanced Imaging Research Center, to enroll people in a similar study in 2016. Courtesy of Oregon Health & Science University hide caption

Counselors will be on site as employees return to work at the Inland Regional Center, the site of a mass shooting last month in San Bernardino, Calif. "I honestly expect those people that even think they're healed are going to come back and they're going to be jolted right back to that day as we go through those processes of grief and loss," said Vince Toms, a manager. Jae C. Hong/AP hide caption

Van Zyl and Garcia Flores hold hands as van Zyl promises to do everything she can to ease his pain and control symptoms. Heidi de Marco/Kaiser Health New/Heidi de Marco/Kaiser Health News hide caption

To mark the 400th anniversary of William Shakespeare's death, the Folger Shakespeare Library is sending the first printed collection of all his plays out on tour. Folger Shakespeare Library hide caption