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(CNN) – A geometry problem that has been puzzling scientists for 60 years has likely just been solved by an amateur mathematician with a newly discovered 13-sided shape. Called “The hat” because it vaguely resembles a fedora, the elusive shape is an “einstein” (from the German “ein stein,” or “one stone”). That means it can completely cover a surface without read more

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Barrel-chested Lucas Helmke, 33, from Brisbane, Australia, has pushed his strength and stamina to their limits to break the most push ups in one hour world record. Lucas performed 3,206 push ups within one hour – that’s an average of over 53 per minute. The previous record of 3,182 was set by another Aussie, Daniel Scali, in April 2022. Lucas read more

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“Hi, Joel? It’s Marty Cooper.” Engineer Martin Cooper cradled a bulky object to his ear, listening. The gray device had two rows of numbered buttons between the ear and mouthpiece. An antenna poked from the top, reaching skyward to pick up invisible signals from the city’s jangling atmosphere. Next to the sidewalk, cars and taxis zipped down read more