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.

Light pollution is encroaching on observatories around the globe – making it harder for astronomers to study the cosmos

By Richard Green, Astronomer Emeritus, Steward Observatory, University of Arizona

Some observatories that used to be dark and remote are now adjacent to bright urban centers. And sending all telescopes into space isn’t a viable solution.

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