A grieving relative is held back by others at the scene where the Ethiopian Airlines Boeing 737 Max 8 crashed shortly after takeoff on Sunday killing all 157 on board, south of Addis Ababa. (AP Photo/Mulugeta Ayene)

A demonstrator offers a flower to a police officer as teachers and students take part in a protest demanding immediate political change in Algiers. REUTERS/Ramzi Boudina

An anti-Brexit campaigner wears a head scarf modeled on the EU flag as she shouts near the Houses of Parliament in London. AFP / Isabel Infantes

Rescue workers help carry a child at the site of a collapsed building containing a school in Nigeria's commercial capital of Lagos, Nigeria. REUTERS/Afolabi Sotunde

French scientists touring Madre de Dios archipelago in southern Chile. AFP / CENTRE TERRE ASSOCIATION / HO

Skiers compete during the first stage of the 34th edition of the ski-mountaineering race Pierra-Menta in Areches-Beaufort, French Alps. AFP / JEFF PACHOUD

Austria's Cornelia Huetter is evacuated on a stretcher after falling while competing in the Women's downhill race during the FIS Alpine ski world cup in Grandvalira Soldeu - El Tarter, in Andorra. AFP / JAVIER SORIANO