Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Is the whole universe just a simulation?

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: Many philosophers and scientists ...

27 Department ofEpidemiology and Preventive Medicine, University of Regensburg, Germany 28 Faculty of Medicine and Health Sciences, Norwich Medical School, University of East Anglia Faculty of ...

Sikorsky anticipates Federal Aviation Administration certification of its S-92A+ heavy-twin helicopter in 2026, despite test-stand problems delaying approval of the aircraft’s redesigned main gearbox.