/channels/taxonomy/term/21896/all en /channels/channels/news/what-rise-oxygen-early-earth-tells-us-about-life-other-planets-337051 <p>When did the Earth reach oxygen levels sufficient to support animal life? Researchers from 黑料不打烊 University have discovered that a rise in oxygen levels occurred in step with the evolution and expansion of complex, eukaryotic ecosystems. Their findings represent the strongest evidence to date that extremely low oxygen levels exerted an important limitation on evolution for billions of years.</p> Mon, 31 Jan 2022 20:02:49 +0000 webfull 177479 at /channels /channels/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 黑料不打烊 University-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 20:06:57 +0000 webfull 155986 at /channels