Participants run through the streets of the Back Bay during the 16th annual Santa Speedo Run in Boston, Massachusetts, December 12, 2015. (Photo by Brian Snyder/Reuters)

A member of the “Castellers Minyons de Terrassa” adjusts her belt before forming a human tower or ÒcastellÓ during the festival of the patron saint of Barcelona “The Virgin of Mercy” at Sant Jaume square in Barcelona, Spain, September 20, 2015. The formation of human towers is a tradition in Catalonia dating back to the 18th century. (Photo by Susana Vera/Reuters)

This bat gives a cheeky smile as he gobbles down his food at Singapore Zoo, on September 10, 2013. (Photo by Benny Iskander/HotSpot Media)

Karis, a one month old lion cub being weighed at Blair Drummond Safari Park near Stirling, Scotland, Thursday October 10, 2013. Weighing in at 5kg, the cub will stay with her mother, Teekay until she is 12 weeks old before they are returned to the pride. (Photo by Andrew Milligan/AP Photo/PA Wire)

Clouds reflect off the water as they pass over while SpaceX prepares their super heavy-lift Starship SN8 rocket for a test launch this week at the company's facilities in Boca Chita, Texas, U.S. December 1, 2020. (Photo by Gene Blevins/Reuters)

A weather vane on a farm building close to the HS2 line on November 24, 2020 in Great Missenden, England. HS2 protesters continue to occupy key infrastructure sites along the proposed HS2 route claiming that the project is “the most carbon-intensive and environmentally destructive project in UK history”. (Photo by Jim Dyson/Getty Images)

Tourists and locals apply colour dust to each other as they celebrate Holi festival in Kolkata, Eastern India, 28 March 2021. (Photo by Piyal Adhikary/EPA/EFE)