A machine works on a Rio 2016 Olympic medal at the Casa da Moeda do Brasil (Brazilian Mint) in Rio de Janeiro, Brazil, June 28, 2016. The Casa da Moeda do Brasil is the Brazilian mint, owned by the Brazilian government and administratively subordinated to the Ministry of Finances. It was established in 1694. (Photo by Sergio Moraes/Reuters)

Visitors look out from a balcony in a quiet mall area with closed retail shops and restaurants only offering takeaway on Tuesday, May 10, 2022, in Beijing. China's capital began another round of three days of mass testing for millions of its residents Tuesday in a bid to prevent an outbreak from growing to Shanghai proportions. (Photo by Ng Han Guan/AP Photo)

A rickshaw puller waits for customers during heavy rainfall in Kathmandu, Nepal, 28 May 2021. As Government stricken nationwide lockdown from 28 May 2021 to control coronavirus disease (COVID-19) infection and deaths, low-income families are struggling to cater for their daily lives. (Photo by Narendra Shrestha/EPA/EFE)

A woman moves a sandbag along a flooded road in the aftermath of the heaviest recorded rainfall in Zhengzhou in central China's Henan province on Saturday, July 24, 2021. Rescuers used bulldozers and rubber boats to move residents out of flooded neighborhoods in central China on Saturday after torrential rains killed at least 56 people. (Photo by Dake Kang/AP Photo)

A girl wearing a mask to help curb the spread of the corona virus runs through a fountain in Beijing, China, Thursday, August 26, 2021. (Photo by Ng Han Guan/AP Photo)

Police spraying protesters with pepper spray inside Central Station after a Black Lives Matter rally in Sydney, Australia, 06 June 2020, a protest against the deaths of Aboriginal people in custody and solidarity with the US protests for George Floyd. (Photo by James Gourley/EPA/EFE)

A displaced Pakistani girl collects recyclable goods from a garbage to earn living for her family in Islamabad, Pakistan, Tuesday, January 19, 2016. (Photo by B.K. Bangash/AP Photo)

A sales assistant poses for photographs with a mealworm cookie in Seoul, South Korea, August 8, 2016. Insect-eating, or entomophagy, has long been common in much of the world, including South Korea, where boiled silky worm pupae, or beondegi, are a popular snack. Now, South Korea is looking to expand its insect industry as a source of agricultural income. (Photo by Kim Hong-Ji/Reuters)