A curious circular structure and a ball court, both from the pre-Hispanic period, have been identified at a newly documented archaeological site in Mexico. The circular structure and surrounding ...
Enigmatic structures on Venus could reveal unexpected activity. These formations, called coronae, are massive circular to oval structures, measuring up to several hundred kilometers (miles) in ...
Cities are complex ecologies of intersecting natural systems and urban infrastructure. Environmental degradation has brought attention to the asymbiotic relationship between man-made and natural ...
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