There are various CAD challenges out there that come with bragging rights. Some, like the Certified Solid Works Professional Exam (CWSP) might actually look good on a resume. [Deltahedra] is ...
Climate Compass on MSN
How Rivers Sculpt Earth's Deepest Canyons - Explained By Geographers
The Science Behind River Downcutting The water pressure of a river can cut deep into a riverbed. Sediments from the riverbed ...
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