Tunnel found under temple in Mexico

Researchers found a tunnel under the Temple of the Snake in the pre-Hispanic city of Teotihuacan, about 28 miles northeast of Mexico City.

New trigonometry is a sign of the times

Mathematics students have cause to celebrate. A University of New South Wales academic, Dr Norman Wildberger, has rewritten the arcane rules of trigonometry and eliminated sines, cosines and tangents from the trigonometric ...

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