A woman mourns the loss of her husband, next to a placard which reads “I'm a pusher”, who was shot dead by an unidentified gunman in Manila on July 23, 2016. Philippine President Rodrigo Duterte swept to power in May on a promise to clampdown on drugs, and police have since confirmed killing nearly 200 people in a two-month crime blitz. There has also been a surge in killings by anti-drug vigilantes who leave victims' corpses on city streets wrapped in packaging tape with signs accusing them of being drug dealers. (Photo by Noel Celis/AFP Photo)

A polar bear whose bottom half is caked in oily black gunk. A whale wrapped in striped fabric: a pseudo straightjacket. These are the messes climate change leaves behind, the things we know are happening but often don’t have the opportunity to see with our own eyes. Swiss street art duo Christian Rebecchi and Pablo Togni, otherwise known as NeverCrew, met in art school when they were 15 and started making work together soon after. As a team, the artists adorn the world with eye-popping and gut-wrenching images depicting the consequences of humanity’s actions on earth. (Photo by NeverCrew/The Huffington Post)

“A monowheel is a one-wheeled single-track vehicle similar to a unicycle. However, instead of sitting above the wheel, the rider sits either within it or next to it. The wheel is a ring, usually driven by smaller wheels pressing against its inner rim. Most are single-passenger vehicles, though multi-passenger models have been built.

Pedal-powered monowheels were built in the late 19th century; most built in the 20th century have been motorized. Some modern builders refer to these vehicles as monocycles, though that term is also sometimes used to describe motorized unicycles. Today, monowheels are generally built and used for fun and entertainment purposes, though from the 1860s through to the 1930s, they were proposed for use as serious transportation”. – Wikipedia

Photo: Cycle inventor Kerry McLean poses for the photographer 2000 in Walled Lake, Michigan. The “Monocycle” is equipped with a 40-horsepower engine, 4ft tire and is expected to reach speeds upwards of 100 mph. (Photo by Bill Pugliano/Liaison)

In this Saturday, April 8, 2017 photo, a keeper walks camels to the Al Marmoom Camel Racetrack, in al-Lisaili about 40 km (25 miles) southeast of Dubai, United Arab Emirates. Camel racing is a big-money sport and fast thoroughbreds can fetch well over a million dollars. As rising temperatures across Gulf Arab countries signal the end of the winter camel racing season, Dubai is wrapping up its races with the annual Al Marmoom Heritage Festival that has drawn thousands of camels from across the oil-rich Gulf. (Photo by Kamran Jebreili/AP Photo)

“A Cornish pasty, sometimes known as a pastie or British pasty in the United States, is a filled pastry case, associated in particular with Cornwall in Great Britain. It is made by placing the uncooked filling on a flat pastry circle, and folding it to wrap the filling, crimping the edge at the side or top to form a seal. The result is a raised semicircular package”. – Wikipedia

Photo: Cornish students (R) Nina Brooke, 21 and (L) Bonnie Mably, 20, laugh as they pose for a photograph as they try a Cornish pasty that has been baked as part of the World Cornish Pasty Championships at The Eden Project on March 3, 2012 in St Austell, England. (Photo by Matt Cardy/Getty Images)

A Puffin returns to it's nest with a beak full of sand eels on June 25, 2011 on Inner Farne, England. The Farne Islands, which are run by the National Trust, are situated two to three miles off the Northumberland coastline. The archipeligo of 16-28 separate islands (depending on the tide) make the summer home to approximately 100,000 pairs of breeding seabirds including around 36,000 Puffins, 32,000 Guillemots and 2,000 pairs of Arctic Terns. The species of birds which nest in internationally important numbers include Shag, Sandwich Tern and Arctic Tern. The coastline around The Farnes are also the breeding ground to one of Europe's largest Grey Seal colonies with around 4,000 adults giving birth to 1500 pups every year. (Photo by Dan Kitwood/Getty Images)

The Rio de Janeiro Olympics kick off on August 5 for some two weeks of competitive games drawing athletes as well as audiences from around the world. As they prepare to cover the event, Reuters photographers look back on their favourite pictures from past Olympics where they captured the action on the ground as well as the participants' tears and joy that followed. (Photo by Lucy Nicholson/Reuters)

Girls of the Long Horn Miao ethnic minority group wear headdresses as they prepare gather for Tiaohua or Flower Festival as part of the Lunar New Year on February 6, 2017 in Longga village, Guizhou province, southern China. (Photo by Kevin Frayer/Getty Images)