Teachers with the Jennings School District pick up trash Tuesday on West Florissant Avenue in Ferguson, Mo., the scene of nightly police clashes. Jennings and the neighboring Ferguson school district have canceled class due to ongoing unrest. Elise Hu/NPR hide caption

itoggle caption Elise Hu/NPR

Circle of 6 was born out of the 2011 "Apps Against Abuse" challenge, a partnership between the Office of the Vice President, Department of Health and Human Services and the White House Office of Science and Technology Policy. Kainaz Amaria/NPR hide caption

itoggle caption Kainaz Amaria/NPR

One of many demonstrations highlighting what has been called a national epidemic of campus sexual assault. Wolfram Burner/Flickr hide caption

itoggle caption Wolfram Burner/Flickr

Former UCLA basketball player Ed O'Bannon, seen here in 2010, has won a court ruling in which the NCAA was told it can't forbid college athletes from being compensated for the use of their images and names. Isaac Brekken/ASSOCIATED PRESS hide caption

itoggle caption Isaac Brekken/ASSOCIATED PRESS