A traffic police woman whistles at a pedestrian, Monday, July 27, 2015, in Pyongyang, North Korea where its citizens are having a one-day national holiday to celebrate the country's 62nd anniversary of the armistice that ended the Korean War. (Photo by Wong Maye-E/AP Photo)

Participants climb over a wall at the “Tough Mudder” endurance event series in Arnsberg September 6, 2014. Competitors who took part in the endurance event saw themselves having to overcome various military style obstacles. (Photo by Ina Fassbender/Reuters)

Iain Blake is an amateur photographer that has gained his popularity on the Internet thanks to his photoset of “Stone Footprints”. By finding the right stones and perfectly arranging them, Iain was able to make a number of very appealing pictures. For some reason, these “footprints” look adorable. It could have something to do with the cartoony appearance that they have. In our opinion, the finest photo out of this whole set is the one with a large footprint and a smaller one on top of it, as if a child has stepped into the footprint left by his or her parent. (Photo by Iain Blake)

The Eiffel Tour-the body language of balance. I came across this group of young adults from Sarajevo, Bosnia, having fun testing their balance two nights ago in on the Esplanade de Trocadero. (Photo and comment by Peter Turnley)

Oh, those daredevils! They’re always willing to pull off another incredible stunt to gain fame and glory. Sometimes it’s something incredibly stupid, but sometimes it is simply incredible. The stunt that you can see on this video is of the latter kind. Who would have thought of attaching a jet engine to a bicycle? And who would have dared riding one? Circuit Paul Ricard, that’s who. On November 7 2014 he reached a whooping speed of 333 hm/h (207 mph) on his bicycle. Now that is a tale to tell your grandchildren… if you ever live long enough to see them with a lifestyle such as this.

It would have been so much better if the pictures created by Mister Blick were real. How wonderful it would be if these men were actually holding flowers, and none of these wars happened. Regretfully, all these wars have left their mark on the history of mankind. Wars are always bad. They bring nothing but destruction and terror to the regular people, while the big players make huge profits off of the suffering of the common folk. However, establishing dominance is an integral part of the human nature, and the desire to wage wars is simply an extension of this trait. Strong countries always suppress the weaker ones to gain even more power. Unfortunately, this is as inevitable as the sunrise or sunset. (Photo by Mister Blick)

A frog appears to have a big smile for the camera, Russia. Things are heating up at the Comedy Wildlife Photography Awards as the shortlisted final 40 entries are revealed. This year's competition has featured over 2200 hilarious entries from around the world with photos including a fox face planting in the snow, a dancing brown bear and a pair of seemingly headless penguins – all beautifully photographed with perfect comedy timing and a strong conservation message. (Photo by Artyom Krivosheev/Barcroft Images/Comedy Wildlife Photography Awards 2016)

A citizen rides in smog on December 20, 2016 in Jinan, Shandong Province of China. Air quality index (AQI) readings exceeded 400 and some schools have suspended classes in Jinan. (Photo by VCG/VCG via Getty Images)