People walk under Australia's iconic landmark Harbour Bridge in Sydney on April 3, 2019, as heavy fog blankets the city. Low visibility due to heavy fog affected traffic in the city and caused flight delays at the Sydney airport. (Photo by Saeed Khan/AFP Photo)

A Hezbollah supporter fires a rocket-propelled grenade in the air to celebrate the arrival of Iranian fuel tankers to Lebanon, in the eastern town of Baalbek, Lebanon, Thursday, September 16, 2021. The delivery violates US sanctions imposed on Tehran after former President Donald Trump pulled America out of a nuclear deal between Iran and world powers three years ago. (Photo by Bilal Hussein/AP Photo)

Dancers perform during the Navam Perahera at the Gangaramaya Temple in Colombo, Sri Lanka, on February 15, 2022. (Photo by Xinhua News Agency/Rex Features/Shutterstock)

Carnival participants dressed in costume and wearing body paint pose for a group picture during the annual Zambo carnival held in Lebanon's northern city of Tripoli on March 14, 2021, marking the last period of excess on the eve of the Christian Greek Orthodox lent. The inspiration of the annual Zambo celebration is unclear, despite it being a tradition that stretches back over a century to when an emigrant to Brazil returned to his native Tripoli bringing the carnival with him. (Photo by Ibrahim Chalhoub/AFP Photo)

A protester wears a face shield made of recycled plastic bottles by artist Leeroy New during a anti-terror bill rally at the University of the Philippines as they observe Independence Day on Friday, June 12, 2020, in Metro Manila, Philippines. Hundreds of activists in the Philippine capital staged protests Friday against a proposed anti-terror law they say could be used to quash dissent, ignoring police threats that they could be arrested for violating coronavirus restrictions against large public gatherings. (Photo by Aaron Favila/AP Photo)

In 2013, the United Nations General Assembly officially designated November 19 as World Toilet Day, which is coordinated by UN-Water in collaboration with governments and partners. Here: An open-air toilet and a hot spring shower are seen in the middle of nowhere on the road to the Krafla geothermal power station and lava fields, near Reykjahlid and Lake Myvatn in northeastern Iceland, on August 19, 2012. (Photo by Mariana Suarez/AFP Photo)

Syrian refugee boys play with toy guns at Eminonu district in Istanbul, Turkey, 08 January 2019. (Photo by Sedat Suna/EPA/EFE)

A university in the Philippines in March 2024 has come up with a novel way to stop students cheating in exams – by getting them to wear hats in the shape of animated characters and random objects such as a crate of beer. (Photo by Angelo Ebora/beampix/Solent news)