A passenger not wearing pants sits in a subway train during the “No Pants Subway Ride” in Prague, Czech Republic, January 10, 2016. The event is an annual flash mob and occurs in different cities around the world in January, according to its organisers. (Photo by David W. Cerny/Reuters)

This time exposure photo provided by the Santa Barbara County Fire Department shows a series of lightning strikes over Santa Barbara, Calif., seen from Stearns Wharf in the city's harbor, Tuesday evening, March 5, 2019. A storm soaking California on Wednesday could trigger mudslides in wildfire burn areas where thousands of residents are under evacuation orders, authorities warned. (Photo by Mike Eliason/Santa Barbara County Fire Department via AP Photo)

Wedges of an orange generate enough current and electrical juice – 3.5 volts – to power an LED. The fruit’s citric acid helps electrons flow from galvanized nails to copper wire in this 14-hour exposure. This image was published in September’s Visions of Earth, a trio of photos that appear in each issue of National Geographic. (Photo by Caleb Charland/National Geographic)

Riot police walk in the street as a couple kiss on June 15, 2011 in Vancouver, Canada. Vancouver broke out in riots after their hockey team the Vancouver Canucks lost in Game Seven of the Stanley Cup Finals. (Photo by Rich Lam/Getty Images)

An Indian child artisan carries an idol of elephant-headed Hindu God Ganesha at a workshop ahead of Ganesh Chaturthi festival in Chennai, India, Saturday, September 7, 2013. Ganesh Chaturthi, which begins from September 9, is celebrated as the birthday of Lord Ganesha who is widely worshiped by Hindus as the God of wisdom, prosperity and good fortune. (Photo by Arun Sankar K./AP Photo)

Muslim women light candles during the “EarthHour” in Jakarta, Indonesia, on March 23, 2013. Hundreds of people observed the global event that encourages people to turn off their lights for 60 minutes. (Photo by Dita Alangkara/Associated Press)

A Ukrainian man stands in protest in front of gunmen in unmarked uniforms as they stand guard in Balaklava, on the outskirts of Sevastopol, Ukraine, Saturday, March 1, 2014. (Photo by Andrew Lubimov/AP Photo)

An Indian laborer talks on his mobile phone as he transports a refrigerator on his back at a market in Jammu, India, Sunday, June 7, 2020. India whose coronavirus caseload is fifth highest in the world has partially restored trains and domestic flights and allowed reopening of shops and manufacturing. (Photo by Channi Anand/AP Photo)