A person smokes marijuana as marijuana enthusiasts mark the informal annual cannabis holiday, 4/20 (four-twenty), corresponding to the numerical figure widely recognized within the cannabis subculture as a symbol for all things related to marijuana, in Hyde Park in London, Britain on April 20, 2023. (Photo by Maja Smiejkowska/Reuters)

Olympic gold medalist Arisa Trew of Australia competes on the vert ramp during the second day of “Exposure 2025” an annual all-girls skateboarding contest in Encinitas, California, U.S., November 2, 2025. (Photo by Mike Blake/Reuters)

President Donald Trump is reflected in a mirror as he and Saudi Crown Prince Mohammed bin Salman walk along the White House Colonnade on Tuesday, November 18, 2025. The crown prince was welcomed to the White House with all the trappings of a state visit, including a black-tie dinner in the East Room. (Photo by Haiyun Jiang/The New York Times)

Three samurai warriors in armour, circa 1880. (Photo by Kusakabe Kimbei). P.S. All pictures are presented in high resolution.

A line of soldiers firing handguns during a training session, circa 1920. (Photo by Keystone). P.S. All pictures are presented in high resolution.

The best man in a wedding party, who all declined to be identified, stands near the bride and groom as he holds an AR-10 rifle he was handed while the party was having their pre-wedding portraits taken on the steps of the capitol before a rally nearby by gun-rights advocates to protest a new expanded gun background check law in Washington state Saturday, December 13, 2014, in Olympia, Wash. The wedding party was not part of the protest, but posed for pictures with it after being handed it by gun activist Brandon Lyons, who said “we've all just broken the law”, by handing the gun over. Saturday's protest was called the “I Will Not Comply” rally, and those attending said they will openly exchange firearms in opposition to the state's new voter-approved universal background check law, Initiative 594. The law, which took effect on December 4, requires background checks on all sales and transfers, including private transactions and many loans and gifts. (Photo by Elaine Thompson/AP Photo)

Google has built its first self-driving car prototypes and hopes to test hundreds more models this summer. If all goes well, the company is planning a pilot program in California over the next few years.