Director / Editor: Victor Teboul, Ph.D.

Looking inside ourselves and out at the world
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.

Fern stems reveal secrets of evolution – how constraints in development can lead to new forms

By Jacob S. Suissa, Assistant Professor of Plant Evolutionary Biology, University of Tennessee

Is an organism a sum of its parts, or should they be considered as a whole? New research on ferns shows how the way scientists understand evolution affects how they study life.

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