Miniature spring-wound 35-mm film camera in a modified cigarette pack. The Tessina’s small size and quiet operation provided more options for concealment than most commercially available models. (Photo by Central Intelligence Agency)

Pfc. Remy Bouchard swaps a cigarette for an egg with a French Orphan near La Haye Du Puits, France on July 18, 1944, which was captured by American forces. The boy is only twelve years old. (Photo by Hugh Broderick/AP Photo)

Minoru Suzuki and Sanshiro Takagi, wrestlers from Japanese professional wrestling promotion DDT Pro-Wrestling, fight inside Tokaido Shinkansen bullet train from Tokyo to Nagoya during a wrestling show in Japan on September 18, 2023, in this handout photo released by JR Tokai (The Central Japan Railway Company). (Photo by JR Tokai/Handout via Reuters)

In this March 12, 2015 photo, a man tours a graffiti exhibition at the Museum of Modern Art, in Bogota, Colombia. The city-run museum recently held an exhibition highlighting the work of Bogota street artists who go by aliases such as Joems and the MonsTruacioN collective. (Photo by Fernando Vergara/AP Photo)

Mount Sinabung looks calm as seen from Karo, North Sumatra at dawn on August 8, 2021. (Photo by Tibta Nangin/AFP Photo)

An artist has discovered a bizarre way to create his work – by coating the feet of insects with paint who then crawl across the canvas creating intricate pieces of art. (Photo by Caters News)

A member of indigenous peoples and organizations linked to indigenous movements are holding a demonstration in the center of Manaus, Amazonas, Brazil, 30 May 2023. Indigenous people protested against a bill that is being processed in Congress that could make it difficult to demarcate native lands. (Photo by Raphael Alves/EPA/EFE)

“NASA's Pathfinder, Pathfinder Plus, Centurion and Helios Prototype were an evolutionary series of solar- and fuel-cell-system-powered unmanned aerial vehicles. AeroVironment, Inc. developed the vehicles under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) program. They were built to develop the technologies that would allow long-term, high-altitude aircraft to serve as “atmospheric satellites”, to perform atmospheric research tasks as well as serve as communications platforms”. – Wikipedia

Photo: The solar-electric Helios Prototype flying wing is flies over the Hawaiian islands of Niihau and Lehua during the first solar-powered test flight July 14, 2001 from the U.S. Navy's Pacific Missile Range Facility on Kauai, HI. The 18-hour flight was a functional checkout of the aircraft's systems and performance in preparation for an attempt to reach sustained flight at 100,000 feet altitude later in the summer. (Photo Courtesy of NASA/Getty Images)