A scavenger sifts through garbage piled on the bank of Beirut river, Lebanon August 24, 2015. Lebanese protest organisers called for a fresh demonstration against the government on Saturday after two days of rallies that turned violent in central Beirut and wounded scores of people. The “You Stink” campaign has mobilised against the government's failure to solve a garbage disposal crisis, bringing thousands of people onto the streets in protests that have threatened the survival of the cabinet. (Photo by Mohamed Azakir/Reuters)

“Artist Paula Swisher has come up with a quirky way of lessening the stress of household bills - by doodling highly intricate birds on each one. Swisher, 37, has drawn hundreds of birds in her lifetime and puts her love of ornithology down to the nature walks she went on as a youngster. Looking for work during the recession, she began sketching birds on the inside of books, seeing the practice as a creative way to mutate the pages into something fresh. But now she's made the transition from books to bills – while admittedly making a playful commentary on the predatory banking businesses”. – Caters News. (Photo by Paula Swisher/Caters News)

Female Kurdish Peshmerga fighters affiliated with Iran's separatist Kurdistan Freedom Party (PAK), are pictured at a base in an undisclosed location in the Arbil province, the capital of the autonomous Kurdish region of northern Iraq, on December 1, 2022. Iranian-Kurdish rebel groups have for decades sought refuge in northern Iraq's autonomous Kurdistan region, but they have recently come under fresh fire amid weeks of protests in the neighbouring Islamic republic. (Photo by Safin Hamed/AFP Photo)

“Suri tribes boys are collecting the blood of a cow in a calabash the vein of the animal was opened with a bow and an arrow. Like most pastoralists the Surma people are drinking fresh blood which is from the cow vein. Only some minutes after the wound at the vein is closed again the animals are back with their herd”. (Photo and caption by Anthony Pappone)

A woman poses for a picture as bunches of paprika hang on the walls of her house to dry in the village of Donja Lakosnica, Serbia October 6, 2016. Donja Lokosnica is the Serbian “capital of paprika”, since almost all of the 1300 inhabitants are involved in growing paprika. As autumn approaches, the whole village turns red, because of many threads of dried peppers, that hang around Lokosnica, waiting for their winter use. Each of these paprika threads is handmade, still dried according to traditional techniques, assisted solely by the sun and fresh air. (Photo by Marko Djurica/Reuters)

Christian people crowd a bush taxi on a road 55km north of Bangui as they are on their way to the capital where they expect to sell some products on the market on January 19, 2014. Fresh fighting broke out in the strife-torn Central African Republic on the eve of an announcement on Sunday of the candidates seeking to become the new interim president. Sectarian violence has gripped the landlocked country after a March 2013 coup launched by the mostly Muslim Seleka rebels, and the UN has warned that the bloodshed could turn into genocide. (Photo by Eric Feferberg/AFP Photo)

A firefighter battling the King Fire watches as a backfire burns along Highway 50 in Fresh Pond, California September 16, 2014. The fire led officials to call on about 400 people to evacuate from areas threatened by the blaze, Cal Fire spokeswoman Alyssa Smith said. It has charred more than 11,500 acres (4,654 hectares) and was 5 percent contained on Tuesday. (Photo by Noah Berger/Reuters)

Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).

Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.