Anand Varma, a U.S. photographer working for the National Geographic, won the First Prize in the Nature Category, Stories, of the 2015 World Press Photo contest with his series of pictures, which includes this one of spores of a fungus landing on an ant, penetrating its exoskeleton and entering its brain, compelling the host to leave its normal habitat on the forest floor and scale a nearby tree, in this picture taken January 22, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Anand Varma/Reuters/National Geographic/World Press Photo)

On August 18, 2012 the infection spreads again as the undead hordes shamble through Vancouver in search of brains. The annual Zombie Walk has been going on for years and each year gets bigger and bigger. (Photo by Gord Gallagher)

Men and Women dressed as zombies walk through Hyde Park on February 25, 2012 in Sydney, Australia. The annual Zombie Walk raises money for the Brain Foundation and this year teamed up with FX channel in promotion of “The Walking Dead” series premiering in Australia this weekend. (Photo by Brendon Thorne/Getty Images)

There is something strangely appealing about the set of pictures created by Sandro Giordano in a series “In Extremis (Bodies With No Regret)”. Could it be the absurdity of the situation? Or the fact that our brain tries to make up some bizarre story to justify what is happening in the pictures? Of course it is impossible to explain why a pair of tennis players ended up lying flat on the ground with a pack of bananas hanging on the net, even if we forget about the tennis racket lodged in the neck of one of the players. Nevertheless, it is fun to recreate these scenes in your mind just seconds before the tragedy took place. (Photo by Sandro Giordano)

The artworks that Alexa Meade makes are very unique and original. A usual painter creates a 2D or a 3D drawing on flat 2D surface. Alexa, on the other hand, draws over the body of a regular person, making them look like a 2D painting. The pictures of these people are almost uncanny, as you realize that the eyes “paintings” are real, and suddenly it dawns upon you that you are seeing a living and breathing human being. It is weird how we perceive this world, and how easy it is to trick our brain into thinking that it’s seeing a two-dimensional object. (Photo by Alexa Meade)

These stunning coloured images show detailed x-ray images of everything from skulls to light bulbs. Artist Paula Fontaine, from Westminster Massachusetts, created the images using a process called digital map painting. To create the images the x-ray emission source – the head of the machine on an arm which focuses the beam – is placed over the object. Paula then retreats behind a shielded screen before activating the x-ray exposure. Here: Brain storm, conceptual composite X-ray. (Photo by Paula Fontaine/Barcroft Media)

A man speaks on his mobile phone on May 31, 2011 in New York City. In a new report by 31 scientists meeting at the World Health Organization's International Agency for Research on Cancer (WHO/IARC) it was found that using a mobile phone may increase your risk for certain kinds of brain cancers. While further scientific work will be conducted, the group of scientists from 14 countries classified cell phones in the carcinogenic category 2B, which is similar to the pesticide DDT and gasoline engine exhaust. (Photo by Spencer Platt/Getty Images)

Revellers take part in a Zombie Walk in Asbury Park, New Jersey October 4, 2014. Thousands of revellers met in Asbury park to attempt to break the Guinness World Record of the largest zombie gathering in the world and raise awareness for brain cancer. (Photo by Eduardo Munoz/Reuters)