Spot, a robot with dog-like movements, walks past a dog in Cathedral Square in Erfurt, Germany on April 20, 2021. Security service provider Ciborius, a provider of robotic security solutions with artificial intelligence, presented its artificial employee with high-resolution 360-degree all-round camera, ultra-bright LED light and a light detection system on Domplatz. (Photo by Michael Reichel/dpa)

A Yemeni pro-government fighter is pictured during fighting with Huthi rebels on the south frontline of Marib, the last remaining government stronghold in northern Yemen, on November 10, 2021. A Yemeni military official said that 28 fighters from the pro-government Obaida tribe and seven government forces were killed in clashes with rebels south of Marib over the previous 24 hours. (Photo by AFP Photo/Stringer)

Ukrainians attend an open military training for civilians on a training range in Kiev, Ukraine, 06 February 2022. According to a survey conducted by the Kiev International Institute of Sociology (KIIS) from December 2021, 50.2 percent of Ukrainians said they would resist in case of a Russian military intervention into their city, town or village. Every third respondent to the poll said they were ready to engage in armed resistance, and 21.7 percent said they were ready to participate in civil resistance actions. (Photo by Sergey Dolzhenko/EPA/EFE/Rex Features/Shutterstock)

Alexia Putellas of FC Barcelona celebrates victory with fans following the UEFA Women's Champions League Quarter Final Second Leg match between FC Barcelona and Real Madrid at Camp Nou on March 30, 2022 in Barcelona, Spain. (Photo by Alex Caparros – UEFA/UEFA via Getty Images)

Locals dress up as Mazcaras to celebrate Entroido on February 21, 2023 in A Xironda, Spain. Entroido is an ancient rural carnival celebrated in Galicia during the previous days of Ash Wednesday. Each town has its traditional characters and costumes. In the small village of A Xironda, locals dress up as Mazcaras with their characteristic masks, cowbells at the waist and whips, and then run through the streets. (Photo by Brais Seara Fernandez/Getty Images)

Portuguese runner Adriele Silva gestures during the Great Wall Marathon at the Huangyaguan section of the Great Wall of China, in Jixian of Tianjin, China May 19, 2018. (Photo by Jason Lee/Reuters)

Tens of thousands of HIV positive prostitutes in the slums of Lagos to ensure a rapid spread of the epidemic. “If you arrive by car, you can smell the HIV virus outside”, joked my driver as we are on track to Badia a criminal slums of Lagos. Badia is a corruption of “Bad Area”. Nigerians have a lack of everything, except black humor. The poor West African country Nigeria, with a population of 140 million people, after India and South Africa the highest number of people with HIV / AIDS. (Photo by Ton Koene/Exclusivepix Media)

A saltwater crocodile with a tyre around its neck is seen in Palu river in Palu on January 16, 2018. Indonesian conservation officials are racing against time to locate and rescue a saltwater crocodile that has had a tire wrapped around its for more than a year on the island of Sulawesi. (Photo by AFP Photo/ARFA)