A group of Afghan girls learn martial arts, in a country where women's sport is severely restricted

We look at 13 pictures from events around the world

Breathtaking visuals from one of world's largest aerial photography competitions

We look at 13 pictures from events around the world

We look at 13 pictures from events around the world

We look at 13 pictures from events around the world

Tens of thousands of people rallied in US cities and at airports on Sunday to voice outrage over the executive order

We look at 13 pictures from events around the world

Hundreds of millions of people around the world celebrate the Lunar New Year

A series of photographs capturing 36 countries in just one image