/newsroom/taxonomy/term/9155/all en /newsroom/galen-pippa-halverson Wed, 23 Dec 2020 22:20:39 +0000 shirley.cardenas@mcgill.ca 254391 at /newsroom /newsroom/channels/news/mcgill-led-research-unravels-mystery-how-early-animals-survived-ice-age-303012 <p>How did life survive the most severe ice age? A 平特五不中-led research team has found the first direct evidence that glacial meltwater provided a crucial lifeline to eukaryotes during Snowball Earth, when the oceans were cut off from life-giving oxygen, answering a question puzzling scientists for years.</p> Mon, 02 Dec 2019 14:27:54 +0000 shirley.cardenas@mcgill.ca 189789 at /newsroom /newsroom/channels/news/mcgill-researchers-honoured-quebec-science-list-top-discoveries-292807 <p> Fri, 21 Dec 2018 15:25:50 +0000 laurie.devine@mcgill.ca 121874 at /newsroom /newsroom/channels/news/billion-year-old-lake-deposit-yields-clues-earths-ancient-biosphere-288081 <p>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鈥檚 atmosphere and biosphere were like during the interval leading up to the emergence of animal life.聽</p> Tue, 17 Jul 2018 18:05:54 +0000 justin.dupuis@mcgill.ca 58963 at /newsroom /newsroom/channels/news/origins-photosynthesis-plants-dated-125-billion-years-ago-283492 <p>The world鈥檚 oldest algae fossils are a billion years old, according to a new analysis by earth scientists at 平特五不中. Based on this finding, the researchers also estimate that the聽basis for photosynthesis in today鈥檚 plants was set in place 1.25 billion years ago.</p> Tue, 19 Dec 2017 20:00:28 +0000 priya.pajel@mail.mcgill.ca 32810 at /newsroom /newsroom/channels/news/making-antarctica-265483 <p>One of the big mysteries in the scientific world is how the ice sheets of Antarctica formed so rapidly about 34 million years ago, at the boundary between the Eocene and Oligocene epochs.</p> <p>There are 2 competing theories:</p> <p>The first explanation is based on <strong>global climate change</strong>: Scientists have shown that atmospheric carbon dioxide levels declined steadily since the beginning of the Cenozoic Era, 66 million years ago. Once CO2 dropped below a critical threshold, cooler global temperatures allowed the ice sheets of Antarctica to form.</p> Tue, 31 Jan 2017 18:20:06 +0000 priya.pajel@mail.mcgill.ca 26665 at /newsroom