Director / Editor: Victor Teboul, Ph.D.

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Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Curious Kids: Why are there so few impact craters on Earth?

By Roger Lawrence Gibson, Professor of Structural Geology and Metamorphic Petrology, University of the Witwatersrand

Impact craters are relatively shallow, so these bowl-shaped “dents” in Earth’s rocky crust can be easily buried or erased by erosion.

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