geology

Origins of photosynthesis in plants dated to 1.25 billion years ago

Published: 20Dec2017

The world’s oldest algae fossils are a billion years old, according to a new analysis by earth scientists at McGill University. Based on this finding, the researchers also estimate that the basis...

Isotopic memory of atmospheric persistence

Published: 14Jan2015

Chemical analysis of some of the world’s oldest rocks, by an international team led by McGill University researchers, has provided the earliest record yet of Earth's atmosphere. The results show...