will.i.am

Singer-songwriter Gwen Stefani of No Doubt performs onstage during Global Citizen 2015 Earth Day on National Mall to end extreme poverty and solve climate change on April 18, 2015 in Washington, DC.  (Photo by Richard Chapin Downs Jr./Getty Images for Global Citizen)

Gwen Stefani, Usher Perform for Thousands at Earth Day Rally

A daylong Earth Day concert had R&B star Usher dancing on crutches Saturday on the National Mall to rally thousands for political action to confront climate change and poverty.

04/18/2015

Photo by David McNew/Getty Images

Must-See U.S. Technology Conventions in 2014

Among the must-see technology conventions to visit are the Cloud Expo in New York, E3 2014 in Los Angeles, MacWorld/iWorld and Dreamforce in San Francisco and South by Southwest in Austin.

02/04/2014

(Michael Buckner/Getty Images)

Pink, will.i.am, Sara Bareilles, Miguel & More Added to Carole King MusiCares Tribute

Newly announced performers include: Sara Bareilles, P!nk, will.i.am, Miguel, Alicia Keys, Sugarland’s Jennifer Nettles, Train, Martina McBride, Jakob Dylan, Darlene Love, Amy Grant, Gloria Estefan, and many more.

12/16/2013