Updated: Sun, 02/16/2025 - 18:42

Due to the current storm, McGill teaching and work should be undertaken remotely for Monday, February 17. Please see your McGill email for more information.


En raison de la tempête, l'enseignement et le travail à McGill devraient être effectués à distance pour le lundi 17 février. Veuillez consulter votre courriel de McGill pour plus d'informations.

Billion-year-old lake deposit yields clues to Earth’s ancient biosphere

Published: 18 July 2018

A sample of ancient oxygen, teased out of a 1.4 billion-year-old evaporative lake deposit in Ontario, provides fresh evidence of what the Earth’s atmosphere and biosphere were like during the...

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