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.

Water recycling is paramount for space stations and long-duration missions − an environmental engineer explains how the ISS does it

By Berrin Tansel, Professor of Civil and Environmental Engineering, Florida International University

Yes, astronauts have to drink water that used to be pee – but their urine is treated extensively, until it is safer to drink than some tap water on Earth.

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