Even though today we have seen the burial of ancient cities as a natural progression of time, there were actually a few ancient communities that were built underground from the beginning.An underground city offered several advantages over surface dwellings. The community would have been protected from the weather, and would be relatively easy to defend, depending on how the city was set up. Here are a few of the most prominent ancient underground cities in the world.1. Elengubu, Turkey(Credit: f ...read more
In 2016, astronomer Vera C. Rubin died at the age of 88. Three years later, Congress designated the NSF-DOE Vera C. Rubin Observatory in Chile in her honor. The telescope at the observatory will have the largest digital camera yet and is expected to go online in 2025. The camera will snap constant pictures for the next 10 years as part of a mapping project that will capture the changing sky.Shooting stars, supernovas, meteors, and comets will all be caught on camera. But the observatory will als ...read more
It’s humbling to realize that much of high-school math, so vexing to so many of us, was already well understood thousands of years ago. The Egyptians came nowhere near E=mc2, but they knew how to find the volume of a pyramid. The Greeks didn’t conjure up calculus, but they did determine the area of a circle and proved it. Seen in historical context, these calculations are hardly less impressive than those of Einstein or Newton.The modern world, with its digital computers and internal combust ...read more
Muscle dysmorphia is a mental health condition where a person perceives their body as weak and smaller than it actually is. It’s a form of Body Dysmorphic Disorder, and recent research shows that social media could have a major influence on this condition.Prevalence of muscle dysmorphia is not well understood, though it mostly affects men. Studies suggest between 1.7 percent and 2.4 percent of people may meet the criteria. In Canada, experts found that one in four of 2,000 adolescent participa ...read more
Being a giant predator during the Pleistocene — from around 2.6 million years to about 11,000 years ago — was no easy feat. From short-faced bears to Ice Age coyotes, American cheetahs, dire wolves, saber-toothed cats, and American lions, competition was a plenty, and staying alive was a daily battle. But yet, this mega-bear was still the apex predator of its time, thriving across North America for millions of years.“Just in the last 13,000 years, we’ve lost most of the big mammals on th ...read more
Author Vishay SinghPosted on Categories Discover Magazine