A scientist removes the nucleus from a human egg using a pipette. This is the first step to making personalized embryonic stem cells. Courtesy of OHSU Photos hide caption

An American Airlines plane at Miami International Airport in February. Joe Raedle/Getty Images hide caption

Chris Yerga, engineering director for Android at Google Inc., speaks at the company's I/O Annual Developers Conference in San Francisco on Wednesday. David Paul Morris/Bloomberg via Getty Images hide caption

Laura Mvula's debut is ambitiously confident, as if she and her band had perfected their sound years ago. Courtesy of the artist hide caption

The exterior of the Internal Revenue Service building in Washington. Susan Walsh/AP hide caption

When Garfield High School in Los Angeles stopped suspending students for "willful defiance" several years ago, it saw suspensions drop from more than 600 to just one. Tuesday, the Los Angeles Unified School District board voted to follow suit in all LA schools. Reed Saxon/AP hide caption

A TrackingPoint rifle features a high-tech scope that includes a laser rangefinder and a Wi-Fi server. Courtesy of TrackingPoint hide caption

A black dehorned rhinoceros is followed by a calf at the Bona Bona Game Reserve in 2012. South Africa has seen a devastating increase in poaching in recent years as black-market demand for rhino horn has grown. Stephane de Sakutin/AFP/Getty Images hide caption

On Monday, the team behind Lee Brice's "I Drive Your Truck" gathered in Nashville to celebrate the song's reaching No. 1 on the Billboard Country Airplay chart. From left: co-songwriters Jimmy Yeary, Connie Harrington and Jessi Alexander, military father Paul Monti and singer Lee Brice. John Russell/BMI hide caption

Crew members unload a catch of sockeye salmon at Craig, Alaska, in 2005. Researchers say fish are being found in new areas because of changing ocean temperatures. Melissa Farlow/National Geographic/Getty Images hide caption