Female members of the Colombian Army take part in the military parade to commemorate Colombia's Independence Day in Bogota on July 20, 2024. (Photo by Alejandro Martinez/AFP Photo)

A Palestinian woman pulls a stroller with children, next to piles of rubble, during a rainy day in Gaza City,on November 25, 2025. (Photo by Mahmoud Issa/Reuters)

Bryan Berg was introduced to card-stacking by his grandfather at the age of 8. He is a self-taught artist in all of the techniques he uses today. Berg's freestanding card structures are based on a grid-like arrangement, which Berg tested in a structural engineering lab to support 660 lbs per square foot―using no tape, no glue, no folding, and no tricks.

“Catch of the Decade”. Can you guess what happened next? Photo location: Katmai National Park, Alaska, USA. (Photo and caption by Aaron Baggenstos/National Geographic Photo Contest)

Ana Ivanovic of Serbia plays a backhand return to Maria Sharapova of Russia during their women's singles final match at the Brisbane International tennis tournament in Brisbane, January 10, 2015. (Photo by Jason Reed/Reuters)

Jessica Chastain arrives at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, January 11, 2015, in Beverly Hills, Calif. (Photo by Jordan Strauss/Invision/AP Photo)

Body builders preparing at the backstage during the Bodybuilding Cup in Kiev, Ukraine on November 7, 2015 which includes classic bodybuilding, physicist and body fitness and bikini in the competition. (Photo by Nazar Furyk/Pacific Press)

A person eats an early Thanksgiving meal served to the homeless at the Los Angeles Mission in Los Angeles, California, November 25, 2015. (Photo by Mario Anzuoni/Reuters)