A man in Alberta, Canada, stands on frozen lake surface with bubbles of methane trapped in the ice© Ascent/PKS Media Inc/Getty Images Read more: What are the 10 coldest places on Earth? What is the coldest known location in our Solar System? An illuminated ice castle during the Harbin International Ice and Snow Sculpture Festival in Harbin, China© Stringer/Anadolu Agency/Getty ImagesExploring Greenland's bediaires and moulins© Philippe Bourseiller/Getty Images Read more: Is it true that no two snowflakes are exactly the same? Could it ever snow on Mars? Snow in the Sahara Desert, Algeria© Karim Bouchetata/ShutterstockA man rides a cart over the frozen 'Lake Cildir' in Aradahan Province of Turkey© Mehmet Ali Ozcan/Anadolu Agency/Getty ImagesExpedition members ski the Akshayuk Pass, in Auyuittuq National Park on Baffin Island, Canada© Christopher Morris - Corbis/Getty Images Read more: Why do our hairs stand on end when we’re cold? Why are we more likely to get sick if we are cold? Johanna Nordblad, 42, Finnish freediver swims under ice during a Ice-freediving training session in Somero, Finland© Olivier Morin/AFP/Getty ImagesClimbers climb a cylindrical ice cave, France© Mathis Dumas/Solent News/Shutterstock Listen to the Science Focus Podcast: There is no Plan B for planet Earth – Lord Martin Rees Air pollution is killing us, here’s how you can stop it – Gary Fuller Men, surrounded by seagulls, are ice-fishing at midday on the barely frozen Bothnia Sea, Western Finland© Olivier Morin/AFP/Getty ImagesAn ice climber ascends a frozen waterfall in Dagestan, Russia, during an ice climbing competition© Stanislav KrasilnikovTASS via Getty Images Read more: How does a waterfall freeze? Without room to expand, would water still freeze? Ice collects on the Chicago river on 3 January 2018. © Scott Olson/Getty ImagesA woman jumps into a pool dug in the frozen river at Beiling Park in Shenyang, China© VCG/VCG via Getty ImagesLos Glaciares National Park, Argentina© Javier Etcheverry/VW PICS/UIG via Getty Images