/newsroom/taxonomy/term/10032/all en /newsroom/channels/news/origins-photosynthesis-plants-dated-125-billion-years-ago-283492 <p>The world’s oldest algae fossils are a billion years old, according to a new analysis by earth scientists at Â鶹AV. Based on this finding, the researchers also estimate that the basis for photosynthesis in today’s 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