A woman wearing a mask reacts at her garden which locates next to chimneys of coal-fired power plant in Shijiazhuang, Hebei province, China, January 28, 2015. Beijing introduced tougher regulations this year to combat pollution, keen to overhaul China's unwanted image of smog-choked cities, fouled waterways and heavy-metal tainted soil. (Photo by Kim Kyung-Hoon/Reuters)

A silkmoth that has hatched out of its cocoon is seen at the Campoverde cooperative, Castelfranco Veneto, Italy June 4, 2015. Despite having wings, the adult moth cannot fly. Clusters of silkworms munch on piles of locally-grown mulberry leaves in a white marquee in Italy's northern Veneto region. They are nourishing hopes of a revival of Italy's 1,000 year-old silk industry. (Photo by Alessandro Bianchi/Reuters)

Children of the Roma community play as they cool off in a fountain in the main square of Pristina, Kosovo on June 14, 2017. (Photo by Armend Nimani/AFP Photo)

A Muslim woman wearing a Hijab stands in the waters in the Mediterranean Sea as an Israeli stands nearby on the beach in Tel Aviv, Israel August 21, 2016. (Photo by Baz Ratner/Reuters)

In this July 15, 2015 photo, Nepalese amputee victims Khendo Tamang, left, and Nirmala Pariyar, both 8, share a single pair of shoes at the Bir Trauma Center in Kathmandu, Nepal. After suffering serious leg wounds in Nepal's massive 2015 earthquake that killed and injured thousands, both girls were brought to the Bir Trauma Center in Kathmandu, to receive single leg amputations. Following their surgeries, Nirmala's relentless cheerfulness drew a still very depressed Khendo close and both found an inseparable friendship which has helped their emotional wounds heal. (Photo by Niranjan Shrestha/AP Photo)

The Soyuz MS-17 spacecraft carrying the International Space Station (ISS) expedition 64 crew of NASA astronaut Kate Rubins and Russian cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov blasts off to the ISS from the Russian-leased Baikonur cosmodrome in Kazakhstan on October 14, 2020. (Photo by Roscosmos/Handout via AFP Photo)

Workers stir hundreds of large ceramic pots as they spend months making a traditional soy sauce on October 14, 2020. Arranged in rows, the containers can hold up to 50 litres of Ban Soy sauce. During the drawn out process the sauce is stirred every two days for two to six months. Ban Yen Nhan village in the Hung Yen Province of Vietnam is famous for its traditional and distinctive method of making the sauce. (Photo by Nguyen Quy/Solent News)

A woman looks on December 10, 2020 at a metal monolith that has popped up on a riverbank of the Vistula in the Polish capital Warsaw, the latest in a string of similar objects that have recently appeared in Europe and the US. Similar-looking objects were found in the United States, Romania and Britain. (Photo by Wojtek Radwanski/AFP Photo)