A member of staff at Morton & Eden holds an extremely rare early Islamic gold coin on Thursday September 12, 2019, which is expected to fetch £1.4m at auction in London. Measuring a 20mm across, about the size of a modern £1 piece, it is one of the world's rarest and most treasured Islamic gold coins from the first dynasty of Islam, the Umayyad gold dinar dated 105h (723AD). (Photo by Victoria Jones/PA Images via Getty Images)

The Vattenfall Solar Team car “Nuna” from the Netherlands competes in the Challenger class on Day 2 of the 2019 Bridgestone World Solar Challenge at Elliott on October 14, 2019 in Elliott Australia. Teams from across the globe are competing in the 2019 World Solar Challenge – a 3000 km solar-powered vehicle race between Darwin and Adelaide. The race starts on the 13th of October in Darwin in the Northern Territory and travels the Stuart Highway to Port Augusta and then via Highway 1 to finish in the City of Adelaide in South Australia. (Photo by Mark Evans/Getty Images for SATC)

A snowboarder wears a protective cushion at the Thaiwoo ski resort in Zhangjiakou close to venues for the Winter Olympics Beijing 2022, Hebei province, China, November 20, 2021. China hopes hosting the Games will springboard the country towards becoming a winter sports destination and will help deliver on a target set by President Xi Jinping to get 300 million Chinese involved in winter sports, with an aim to build a 1 trillion yuan ($157 billion) industry. (Photo by Thomas Peter/Reuters)

A man wearing an aquarium with goldfishes on his head walks among the pedestrians at the “Village de Saint-Malo”, the start point of the Route du Rhum solo sailing race, in Saint-Malo on November 1, 2022. The Route du Rhum solo sailing race starts on November 6, 2022, from Saint-Malo to Pointe-a-Pitre in Guadeloupe. (Photo by Loic Venance/AFP Photo)

A girl holds up her hand to confront the police during a banned protest in Hong Kong on July 1, 2020. China imposed a controversial national security law on Hong Kong on Tuesday, a historic move that worried many Western governments that will strangle the finance hub's freedoms and hollow out its autonomy. (Photo by Keith Tsuji/Zuma Press/Rex Features/Shutterstock)

Taronga's first female elephant calf explores the paddock with her mother Pak Boon at Taronga Zoo on November 3, 2010 in Sydney, Australia. The 120kg elephant was born at 1:12am and is Taronga's first female calf and fifth born to The Australian Conservation Management Plan for endangered elephants. The calf will be given a Thai name to reflect the herds' cultural origin. (Photo by Brendon Thorne/Getty Images)

Beyonce Knowles performs at the Glastonbury Festival at Worthy Farm, Pilton on June 26, 2011 in Glastonbury, England. The festival, which started in 1970 when several hundred hippies paid 1 GBP to watch Marc Bolan, has grown into Europe's largest music festival attracting more than 175,000 people over five days. (Photo by Dave Hogan/Getty Images)

The photographer holds up a Samsung Galaxy Tab 7.7 tablet at the Samsung hall at the IFA 2011 consumer electonics and appliances fair the day before the fair's official opening on September 1, 2011 in Berlin, Germany. The IFA 2011 will be open to the public from September 2-7. (Photo by Sean Gallup/Getty Images)