This photo taken on December 2, 2015 shows a lenticular cloud forming as white streaks from airplanes mark the blue sky, in a rare atmospheric phenomena above the town of Gevgelija on December 2, 2015. Lenticular clouds have been regularly confused for UFOs throughout history due to the their smooth, round or oval lens-shaped structure. (Photo by Armend Nimani/AFP Photo)

A nurse at St. Joseph's Hospital wears a unique mask as the hospital celebrates the release of a COVID-19 patient after 45 days in their care during the outbreak of the coronavirus disease (COVID-19) in Orange, California, U.S., May 5, 2020. (Photo by Mike Blake/Reuters)

A model presents a creation from Dior's Cruise 2021 collection during a live-streamed runway show without an audience due to the coronavirus disease (COVID-19) outbreak, at the Piazza del Duomo, in Lecce, Italy on July 22, 2020. Christian Dior hosted a live but audience-free fashion show in the Italian city of Lecce, in a dazzling celebration of local crafts and traditions that included a dance spectacle in the middle of the baroque main square. (Photo by Alessandro Garofalo/Reuters)

A bee approaching the flowers of a willow in Otzberg, Germany on February 28, 2021. Willow catkins are a protected species and one of the first sources of food for insects in early spring. (Photo by Arne Dedert/DPA)

Dog groomers participate in a contest at the “Interpets” international pet fair in Tokyo, Japan, 01 April 2021. (Photo by Franck Robichon/EPA/EFE)

German model Micaela Schaefer (2nd from Left) and German actor Yvonne Woelke (2nd from right) sighted during Oktoberfest at Theresienwiese on September 21, 2014 in Munich, Germany. (Photo by Chad Buchanan/Getty Images)

This photograph taken during a government organised media tour shows College of Science graduates from Tibet University celebrating their graduation at the Potala Palace Square in the regional capital Lhasa, in China's Tibet Autonomous Region, on June 1, 2021. (Photo by Hector Retamal/AFP Photo)

A damaged wooden garden house is seen amid a field of wheat following floods caused by heavy rainfalls, in Bad Bodendorf, Germany, July 18, 2021. (Photo by Wolfgang Rattay/Reuters)