In this October 15, 2014 file photo, Katsu Nakamura, sky division manager for Yamaha USA, moves the RMax unmanned helicopter into position before a demonstration of its aerial application capabilities at the University of California, Davis' Oakville Station test vineyard in Oakville, Calif. Researchers at UC Davis have been studying the effectiveness of the drone's ability for spraying pest control and nutritional materials on the test vineyard in California's Napa Valley. (Photo by Rich Pedroncelli/AP Photo)

People look through the front windshield of a damaged trolleybus in Donetsk, January 22, 2015. At least seven civilians were killed on Thursday when a shell or a mortar hit a trolleybus stop in the rebel-controlled city of Donetsk in eastern Ukraine, a Reuters witness said. The Reuters cameraman said he saw six bodies on the ground near, and inside, a trolleybus in a southern district of the city. Windows of shops nearby had been blown out by the blast. (Photo by Alexander Ermochenko/Reuters)

Here's a vehicle for the one percent. Dubbed as “the world's most luxurious RV” the 40-foot-long EleMMent Palazzo costs a staggering $3million USD – or more depending on the client's personal choices. If the buyer wishes to add a “top of the range” Model D stereo system with “gold remote control” the cost will be bumped by around $200,000. A “home theatre” could add $60,000 but this time the gold remote will be another $6,000. (Photo by Splash News)

The Belgian photographer Anton Kusters spent two years photographing the Yakuza, Japan’s most notorious gang. He returned with some amazing images that he made into a book called “Odo Yakuza Tokyo”. (Odo means “the way of the cherry blossom” and is the credo of the Yakuza family he followed. Photo: An erotic danser picks up fake 2-dollar bills during a private dance with a Yakuza customer in a strip tease bar in Kabukicho, a bar which is controlled by the ODO family – 2010. (Photo and caption by Anton Kusters)

A girl walks down the runway during a class at a modelling academy in Caracas, Venezuela, on September 20, 2014. Venezuela's famed models and aspiring beauty queens are struggling to doll themselves up. In a country that glorifies voluptuous women and opulent beauty pageants, even basics like deodorant are now at times tricky to find as strict currency controls have led to a scarcity of dollars for imported goods. (Photo by Carlos Garcia Rawlins/Reuters)

A destroyed T-72 tank, which presumably came from Russia, is seen on a battlefield near separatist-controlled Starobesheve, eastern Ukraine, October 2, 2014. The burnt-out remains of dozens of tanks and armoured vehicles in fields near the small village of Horbatenko bear witness to the ferocity of a battle that turned the tide of the conflict in eastern Ukraine. Among the debris, Reuters found the blackened carcasses of what military experts have since identified as two Russian army tanks, supporting statements by Kiev and the West that the rebels were backed by troops and equipment sent by Moscow. (Photo by Maria Tsvetkova/Reuters)

Tao Xiangli gets out of his homemade submarine after operating it in a lake on the outskirts of Beijing September 3, 2009. Amateur inventor Tao, 34, made a fully functional submarine, which has a periscope, depth control tanks, electric motors, manometer, and two propellers, from old oil barrels and tools which he bought at a second-hand market. He took 2 years to invent and test the submarine which costs 30,000 yuan ($4,385). (Photo by Christina Hu/Reuters)

Young adults wearing a mask, attends a ceremony as they commemorates the Coming of Age Day of young people entering adulthood in Tokyo, Japan, on January 10, 2022. While the COVID-19 epidemic continues to progress in Japan due to the new Omicron variant, the events that have been organized by the various municipalities of Tokyo have followed a strict sanitary protocol, such as temperature control, disinfection of hands, and the wearing of a protective mask. (Photo by David Mareuil/Anadolu Agency via Getty Images)