A woman looks at some of the 60 plane trees wrapped in a pink-and-white polka-dot design developed especially for Melbourne by Japanese contemporary artist Yayoi Kusama titled “Ascension of Polka Dots on the Trees”, in Melbourne on November 27, 2024. The National Gallery of Victoria’s (NGV) world-premiere blockbuster exhibition Yayoi Kusama will be on display from 15 December 2024 to 21 April 2025. (Photo by William West/AFP Photo)

A model waits backstage before participating in AFI Joburg Fashion Week show with the theme #AfroAsia, in Johannesburg, South Africa October 4, 2018. Picture taken October 4, 2018. (Photo by Siphiwe Sibeko/Reuters)

Kyla Drumm, 5, waits after receiving the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine in Skippack, Pennsylvania, U.S., November 3, 2021. (Photo by Hannah Beier/Reuters)

Riders perform during a freestyle motocross show at the EICMA exhibition motorcycle fair in Rho, outskirt of Milan, Italy, Thursday, November 7, 2024. (Photo by Luca Bruno/AP Photo)

The world's longest moustache (belonging to one Ram Singh Chauhan of Rajasthan, India) measures a staggering 11.5 feet, or nearly 4 metres.

If we were to burn NH4Cr2O7 with HgSCN in the Dark Ages in Europe and show it to anyone, it is us who would be burning next on a fiery cross of Inquisition. And it’s no wonder, since this experiment produces a truly marvelous result. At first, as you ignite the mixture of NH4Cr2O7 and HgSCN, all you can see is that it is slowly burning with a reddish flame. After a while, however, a crater is formed in the middle of the burning pile, and then, suddenly, tentacle-like appendages start sprouting from the burning mixture. And you can almost hear the scream of the mad occultist – “Come forth, Kraken! Come forth!” But of course, this is simply a chemical reaction that is called the "Pharoah's Serpent". It was also often sold in firework stores until people realized that it was toxic.

Revelers take part in SantaCon in New York City, U.S., December 10, 2022. (Photo by David “Dee” Delgado/Reuters)

Pamukkale, Turkey, is home to these terrace pools, formed by the build-up of carbonate mineral from the warm water flowing from the thermal springs above. (Photo by Image Courtesy of Jennifer Hayes/Getty Images)