NASA/Scott Kelly

First blooming flower grown in space, the blooming space Zinnia out in the sun for the first time aboard the International Space Station on January 16, 2016.

Radcliffe “Ruddy” Roye

Robert Scott stands in a field of cotton with his hands up as a way to protest police violence against black men and women.

Steve Dykes/AP

Bernie Sanders smiles as a bird lands on his podium at a rally at the Moda Center in Portland, Oregon on March 25, 2016.

AFP/Getty Images

A photographer holds a photograph he took of of the Temple of Bel in front of the remains of the historic temple in the ancient Syrian city of Palmyra on March 31, 2016. The Temple of Bel was destroyed by Islamic State jihadists in September 2015.

Carl De Souza/AFP/Getty Images

A Kenya Wildlife Services ranger stands guard in front illegal stockpiles of burning elephant tusks at the Nairobi National Park on April 30, 2016. Kenyan President Uhuru Kenyatta issued a ban on trade in tusks and horns for the protection of elephants.

Jonathan Bachman/Reuters

Ieshia Evans protesting the shooting death of Alton Sterling on July 9, 2016 in Baton, Rouge.

Rajesh Kumar Singh/AP

Volunteers photographed in Allahabad, India, planting trees on July 11, 2016 as part of an effort to restore 50 million trees. India planted 50 million trees in one single day.

Getty

Members of the very first Refugee Olympic Team smiling in front of the "Cristo Redentor" in Rio de Janeiro, Brazil.

Reuters/Denis Balibouse

Standing Rock Chairman, Dave Archambault II waiting to give his speech opposing the Dakota Access Pipeline at the Human Rights Council at the United Nations in Geneva, Switzerland September 20, 2016.

Stringer / Reuters

A demonstrator stared down a riot policeman in Santiago, Chile on September 11, 2016 during a protest marking the country’s 1973 military coup.