/channels/news_feeds/all/term/atmospheric%20oxygen%20isotopes/rss en /channels/channels/news/billion-year-old-lake-deposit-yields-clues-earths-ancient-biosphere-288081 <div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><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’s atmosphere and biosphere were like during the interval leading up to the emergence of animal life. </p></div></div></div><div class="field field-name-field-primary-image field-type-image field-label-hidden"><div class="field-items"><div class="field-item even"><img class="no-float" src="/channels/files/channels/styles/wysiwyg_medium/public/channels/image/untitled-2.jpg?itok=cdohDy0p" width="160" height="92" alt="" /></div></div></div><div class="field field-name-field-published-date field-type-datestamp field-label-hidden"><div class="field-items"><div class="field-item even"><div class="custom-multi-date"><div class="multi-date first"><span class="label">Published: </span><span class="day">18 </span><span class="month">July </span><span class="year">2018</span></div></div></div></div></div> Wed, 18 Jul 2018 16:51:34 +0000 webfull 139008 at /channels