It’s time to start watching for Comet PANSTARRS, one of two comets to get excited about in 2013. Photo: This image provided by NASA shoaws the comet PANSTARRS as seen from Mount Dale, Western Australia on March 5, 2013. According to NASA on March 10, it will make its closest approach to the sun about 28 million miles (45 million kilometers) away. As it continues its nightly trek across the sky, the comet may get lost in the sun's glare but should return and be visible to the naked eye by March 12. (Photo by AP Photo/NASA)

“The 8th annual Water War on Friday in the center of Tel-Aviv, Israel turned into a battlefield, quite literally. As two thousand people were having fun in the square, some water-fighters took to more radical behavior, targeting passing cars, motorcycles and public buses”. – iReport.cnn.com (Photo by Sergey Demyanchuk)

Making use of ULC (ultra light construction,) an Austrian car enthusiast Hannes Langeder managed to build the lightest and slowest Porsche in the world. ...

An American inventor has built a unique upside-down racecar – and successfully taken it on a 24-hour spin around the LeMons track. Jeff Bloch – also known as SpeedyCop – built his upside down 1999 Chevrolet Camaro by combining it with a decrepit 1990 Ford Festiva. To enter the latest LeMons race the car had to cost less than $500, which Bloch achieved by picking a Festiva model with a worn-out 1.3-litre engine and more than 300,000 kilometres on the clock.

Born in 1959 in Bursa. He's interested in painting since his childhood, his career began by drawing a miniature of Istanbul, then he became involved in many art projects in other areas, as design. He produced many jewelry (special collections) to a famous company.

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. The shell is part of an exhibition organized by the state nuclear corporation Rosatom. (Photo by Maxim Zmeyev/Reuters)

The British rock and roll group the Beatles talk to Ed Sullivan at CBS Studio 50 before their live television appearance on “The Ed Sullivan Show” in New York, February 10, 1964. From left to right are, Sullivan, John Lennon, Ringo Starr, holding a cigarette, and Paul McCartney. (Photo by AP Photo)

Throughout the course of the long war in Afghanistan, Coalition troops have relied on thousands of military working dogs to help keep them safe, and make their jobs easier. The dogs are trained to detect explosives, to find illegal drugs, to search for missing comrades, or target enemy combatants. Not only are they active on the front lines, but behind the lines they serve as therapy dogs, service dogs, and loyal companions. They also share the same risks as the ground troops, suffering injuries and sometimes death on the battlefields. Gathered here are images of these dogs and their handlers in Afghanistan and back home, from over the past several years, part of the ongoing series here on Afghanistan.