Ana Paula Santos sunbathes in a bikini top fashioned from electrical tape at the Sabrina Bronze rooftop salon which offers crisp tan lines in the Turano favela of Rio de Janeiro, Brazil, Thursday, January 27, 2022. Santos said she uses the rooftop partially because she prefers its privacy compared to the public beach. (Photo by Silvia Izquierdo/AP Photo)

Debutantes are photographed at the 68th International Debutante Ball at the Plaza Hotel in New York, New York, USA, 29 December 2022. The International Debutante Ball is a traditional family occasion in the New York social season. The ball provides an exciting social setting in which young women and men from all over the world meet one another, have a wonderful time, and form lasting friendships. This year's debutantes represent Belgium, England, France, Greece, Iran, Scotland, and five American states. (Photo by Peter Foley/EPA/EFE)

A supporter of former US President Donald Trump waits outside of Trump's President Day event at the Hilton Palm Beach Airport in West Palm Beach, Florida, on February 20, 2023. (Photo by Giorgio Viera/AFP Photo)

Members of the London School of Samba at the start of the Grand Finale of Notting Hill Carnival in London on August 29, 2022 which has returned to the capital for the first time in three years after being cancelled due to the Covid-19 pandemic. Europe's largest street festival celebrates Caribbean culture and is expected to welcome over 1 million people each day. (Photo by Stephen Chung/Alamy Live News)

Participants hang from ropes as they learn how to use safety gears at an experience centre for construction safety training in Beijing, September 5, 2014. The centre which opened in June 2014 was established to educate workers about construction safety. According to the centre, about 1,000 construction workers undergo 3-hour classes which comprises of 33 modules every month. (Photo by Kim Kyung-Hoon/Reuters)

The Oshkosh M-ATV – MRAP (Mine Resistant Ambush Protected) vehicle developed by the Oshkosh Corporation of Oshkosh, Wisconsin. It is designed to provide the same levels of protection as the larger and heavier previous MRAPs but with improved mobility and it is intended to replace M1114 HMMWVs. (wikipedia) (Photo by Alex Wong/Getty Images)

David Beckham and Victoria Beckham arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England. The marriage of the second in line to the British throne is to be led by the Archbishop of Canterbury and will be attended by 1900 guests, including foreign Royal family members and heads of state. Thousands of well-wishers from around the world have also flocked to London to witness the spectacle and pageantry of the Royal Wedding. (Photo by Pascal Le Segretain/Getty Images)

Some are in it just for the money, others to help buy a meal. Then there are those who trade for fun or to spend time among friends. Millions of investors – pensioners, security guards, high-school students – dominate China's stock markets, conducting about 80 percent of all trades. Retirees gather in brokerage houses dotted around China also to enjoy some company and savour the air conditioning on hot days. Some start as young as 13, trading from home with an eye on future careers in finance. Winning isn't guaranteed. This year, among the most turbulent in China's financial history, its stock markets more than doubled in the six months to May, only to crash amid concerns that growth in the country, which makes everything from cars to steel, is slowing faster than previously thought. (Photo by Aly Song/Reuters)