Interactive Graphics

For more than three years, he was known only as Mosul Eye, an anonymous blogger documenting Islamic StateÕs atrocities. Now Iraq's Omar Mohammed, shown in Europe, Dec. 5, 2017, wants the world Ð and his family Ð to know his identity. (AP Photo)

In this Oct. 20, 2017 photo, Jamain Lee, center, looks at classmate Andre'veon Mosby at Milwaukee Math and Science Academy, a charter school in Milwaukee. Next to him is classmate Dreamnoel Haynes, with Brianca Williams facing them. Lee has seen his grades improve since he enrolled two years ago from a school where he was bullied and frequently got into fights. (AP Photo/Carrie Antlfinger)

FILE - In this Nov. 10, 2017 file photo, Indian commuters wait for transport amid a thick blanket of smog on the outskirts of New Delhi, Nov. 10. 2017. The petroleum coke (petcoke) being burned in countless factories and plants is contributing to dangerously filthy air in India, which already has many of the world's most polluted cities. India's energy-hungry industries like petcoke because it's cheaper and burns hotter than coal; they also defend their use by saying they're recycling a waste that's being produced anyway. (AP Photo/Altaf Qadri, File)

Judiciary Committee Ranking Member John Conyers, D-Mich., questions Attorney General Jeff Sessions during a House Judiciary Committee hearing on Capitol Hill, Tuesday, Nov. 14, 2017, in Washington. (AP Photo/Carolyn Kaster)

In this photo taken Monday, Nov. 13, 2017, Brian Madeux, who has a metabolic disease called Hunter syndrome, looks up at nurse practitioner Jacqueline Madde while receiving the first human gene editing therapy at the UCSF Benioff Children's Hospital in Oakland, Calif., Nov. 13, 2017. To cut his DNA at a precise spot, Madeux was receiving billions of copies of a corrective gene and a genetic tool through an IV. (AP Photo / Eric Risberg)

Seen though an interior window, employees work in the offices of Secureworks in Atlanta on Oct. 4, 2017. Nineteen thousand lines of targeting data obtained from threat intelligence firm Secureworks lays out in unprecedented detail who the hackers tried to compromise, providing a minute-by-minute look at how the group often dubbed "Fancy Bear" penetrated the Democratic National Committee, tried to break into the Clinton campaign and eventually stole chairman John Podesta's emails. (AP Photo/Marina Hutchinson)

In this Oct. 20, 2017 photo, Simone Batista holds her baby Arthur as tears roll down her cheeks while she recounts being cut from the "Bolsa Familia" government subsidy program for low-income people, at her shack home in the Jardim Gramacho slum of Rio de Janeiro, Brazil, Oct. 20, 2017. Batista wants to appeal the government cutting her from the program, but doesn't have enough money to take buses to the administrative office. downtown. (AP Photo/Silvia Izquierdo)