Fireworks explode over Elizabeth Tower housing the Big Ben clock in London. (Photo by Kirsty Wigglesworth/Associated Press)

The lightest material ever made has been produced by a team of scientists in China, a Chinese university announced.

To celebrate the 76 years of Superman, the Warner Bros. Consumer Products and Royal Canadian Mint have created four new collector coins featuring Superman from DC Comics. The decision to continue making these limited edition coins was made after the last year’s sale of Superman coins was a complete success. The newest four collector coins were crafted from gold and silver, after which the colors were applied by hand. Any true fan of superman would be delighted to own one of such coins to show off to his friends and buddies.

Performers eat their lunch before the start of the New Year's Day Parade in London, January 1, 2016. (Photo by Kevin Coombs/Reuters)

Fireworks and light effects illuminate the night sky from the Taipei 101 skyscraper during New Year's Eve celebrations in Taipei, Taiwan, 01 January 2019. (Photo by Ritchie B. Tongo/EPA/EFE/Rex Features/Shutterstock)

Steve Kent skis through Times Square during a snowstorm, Monday, February 1, 2021, in the Manhattan borough of New York. (Photo by John Minchillo/AP Photo)

Protesters take part in “Artists Take Fight Against Police Murders” in New York's Times Square August 13, 2015. (Photo by Brendan McDermid/Reuters)

The Dora the Explorer balloon moves through Times Square during the Macy's Thanksgiving Day parade Thursday, November 23, 2006 in New York. (Photo by Frank Franklin II/AP Photo)