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This list includes all 60 confirmed impact structures in North America in the Earth Impact Database (EID). These features were caused by the collision of large meteorites or comets with the Earth. For eroded or buried craters, the stated diameter typically refers to an estimate of original rim diameter, and may not correspond to present surface ...
Less than ten thousand years old, and with a diameter of 100 m (330 ft) or more. The EID lists fewer than ten such craters, and the largest in the last 100,000 years (100 ka) is the 4.5 km (2.8 mi) Rio Cuarto crater in Argentina. [2]
The American black bear (Ursus americanus), or simply black bear, is a species of medium-sized bear endemic to North America. It is the continent's smallest and most widely distributed bear species. It is an omnivore, with a diet varying greatly depending on season and location. It typically lives in largely forested areas but will leave ...
In 2016, the Colorado Department of Public Health and the Environment (CDPHE) organized a $300,000 project, in conjunction with the Colorado Geological Survey, to inventory Colorado’s abandoned mines and prioritize each site’s reclamation according to current or potential environmental and human health impacts.
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Oct. 14—An assistant principal of a local middle school died in a car crash over the weekend, Santa Fe Public Schools announced Monday. Sue Greig was killed and Mark Waugh, a Milagro Middle ...
A crash test dummy, or simply dummy, is a full-scale anthropomorphic test device (ATD) that simulates the dimensions, weight proportions and articulation of the human body during a traffic collision. Dummies are used by researchers, automobile and aircraft manufacturers to predict the injuries a person might sustain in a crash. [ 1 ]
An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters , which result from explosion or internal collapse, [ 2 ] impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. [ 3 ]