Brain-on-a-chip. Dazzling in green and magenta this image shows the nerve fibres (in green) produced by neural stem cells (in magenta) as they grow on a synthetic gel. Captured by a technique known as confocal microscopy, the image is part of research shedding light on how tinkering with the environment can affect the way in which nerve fibres grow. (Photo by Collin Edington and Iris Lee/Massachusetts Institute of Technology/Wellcome Images)

A supercell thunderstorm develops, May 8, 2017 in Elbert County outside of Limon, Colorado. With funding from the National Science Foundation and other government grants, scientists and meteorologists from the Center for Severe Weather Research try to get close to supercell storms and tornadoes trying to better understand tornado structure and strength, how low-level winds affect and damage buildings, and to learn more about tornado formation and prediction. (Photo by Drew Angerer/Getty Images)

Rickshaw puller Shiori Yoshida, 28, attracts tourists to the guided tour at the Asakusa district in Tokyo, Japan on August 22, 2023. Pullers walk or run an average of 20 km (12 miles) a day and, in addition to being physically strong, they must have extensive knowledge of Tokyo and know how to engage with the tourists who mostly hire them for sightseeing. “I have fun and enjoy myself”, Yoshida said. “In order for the customers to enjoy themselves, I also enjoy myself”. (Photo by Issei Kato/Reuters)

A Christmas Tree goes up in flames in a controlled-setting demonstration by the Glendale Fire Department on December 13, 2023, in Glendale, California. Firefighters showed how quickly a dried-out tree can ignite. According to the National Fire Protection Administration, Christmas trees account for hundreds of fires each year, often ignited by shorts in electrical lights or open flames from candles, lighters or matches. (Photo by Frederic J. Brown/AFP Photo)

Students learn how to use an airsoft gun from Taiwanese military instructors at Kaohsiung Municipal Sanmin Senior High School in Kaohsiung on January 11, 2024. Kaohsiung City launched a national defence education program using digital technology for all its high school students. The program also promotes drug prevention in cooperation with the Taiwan defense ministry. (Photo by Yasuyoshi Chiba/AFP Photo)

Twenty-four-year-old Maryam Aghayee makes hyper-realistic baby dolls acting as surrogates for some Iranian families who are apprehensive of having more children. “It has been about three or four months since I started this work”, says Maryam in Tehran, Iran on October 7, 2020. “After making my second doll, many orders have been coming in. The second doll was much more realistic than the previous one. After making my second doll, I said that from now on I can take customer orders. I did not intend to start a business from the beginning because it was a hobby, but after the second doll, the demand for these kinds of dolls increased, customers want to have such dolls”. (Photo by Majid Asgaripour/WANA (West Asia News Agency) via Reuters)

Van cats, relatively large, have a chalky white coat, sometimes with ruddy coloration on the head and hindquarters, and have blue or amber eyes or have heterochromia, are seen at “Cat Villa”, established to protect the cats in Van, Turkey on January 20, 2021. Internationally valid “health certificate” is prepared for Van cats, visited by local and foreign tourists, within a project to protect their generations and increasing their numbers. Health certificates with information such as name, breed, gender, eye color, date of birth, tail feature, color, hearing status and identity are given to people who want to adopt cats. (Photo by Mesut Varol/Anadolu Agency via Getty Images)

An artist has gone to incredible lengths to paint several iconic album covers on her own face. London-based artist Natalie Sharp wanted to celebrate Record Store Day in a unique way, and asked her Facebook friends for suggestions about which album covers to paint. She was overwhelmed with responses, and as a result painted 40 different album covers on her face, including Nirvana's “Nevermind”, King Crimson's “The Court of the Crimson King”, and “Melt” by Peter Gabriel. Here: King Crimson album. “In fact, I barely used by brushes for King Crimson; I would just keep smudging it with my fingers”. (Photo by Natalie Sharp/Caters News)