Indian Prime Minister Narendra Modi and President Obama meet at Hyderabad House in New Delhi on Sunday, the first day of Obama's three-day trip to India. UPI/Landov hide caption

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Father Najeeb Michaeel shows off one of the many Christian manuscripts he saved from Iraq's Christian libraries. Alice Fordham/NPR hide caption

itoggle caption Alice Fordham/NPR

The leader of Greece's left-wing Syriza party Alexis Tsipras casts his ballot in Athens on Sunday. His anti-austerity party was ahead in earlier polling. Aris Messinis/Getty Images hide caption

itoggle caption Aris Messinis/Getty Images

Allison Begalman, a student at the University of Southern California, wears goggles and headphones to experience a virtual mortar strike on civilians in Aleppo, Syria. James Delahoussaye /NPR hide caption

itoggle caption James Delahoussaye /NPR

New England Patriots head coach Bill Belichick speaks during an NFL football news conference at Gillette Stadium, on Saturday in Foxborough, Mass. Belichick defended the team against allegations they had cheated by using underinflated footballs in a championship game. Steven Senne/AP hide caption

itoggle caption Steven Senne/AP

An official stands in front of relief materials at a camp for displaced people in Maiduguri in Borno State last week. The town, where many have gathered after fleeing Boko Haram attacks, is now said to be under assault from the Islamist extremist group. Reuters/Landov hide caption

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When he was 59 years old, Greg O'Brien was diagnosed with early-onset Alzheimer's disease. Five years later, he is speaking publicly about his experience, even as his symptoms worsen. Courtesy of Greg O'Brien hide caption

itoggle caption Courtesy of Greg O'Brien

One Saturday each month, the Pacific Science Center of Seattle opens early for people with autism spectrum disorders. John Keatley/Pacific Science Center hide caption

itoggle caption John Keatley/Pacific Science Center

A passerby watches a TV news program reporting two Japanese hostages, Kenji Goto, left, and Haruna Yukawa, held by the Islamic State group, in Tokyo, on Friday. Eugene Hoshiko/AP hide caption

itoggle caption Eugene Hoshiko/AP

As the U.S. workforce continues to become more diverse, researchers are now more than ever examining diversity and bias in the work place. iStockphoto hide caption

itoggle caption iStockphoto

Ukraine's president Petro Poroshenko speaks at a meeting of the National Security and Defense Council (NSDC) of Ukraine on Sunday. Mykola Lazarenko/ITAR-TASS/Landov hide caption

itoggle caption Mykola Lazarenko/ITAR-TASS/Landov

Alexis Tsipras, center, leader of Greece's Syriza left-wing main opposition waves to his supporters after voting at a polling station in Athens on Sunday. Petros Giannakouris/AP hide caption

itoggle caption Petros Giannakouris/AP

The UASK app helps sexually assaulted college students in D.C. access a range of services, from rides to the hospital to phone numbers for counselors. The information is personalized to their school. Another version of the app, ASK, provides the same resources to non-students. Emily Jan/NPR hide caption

itoggle caption Emily Jan/NPR