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.

Is it really hotter now than any time in 100,000 years?

By Darrell Kaufman, Professor of Earth and Environmental Sciences, Northern Arizona University

Long before thermometers, nature left its own temperature records. A climate scientist explains how ongoing global warming compares with ancient temperatures.

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