/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´«Ã½ÍøÕ¾. 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