/channels/news_feeds/all/term/ancient%20rocks/rss en /channels/news/isotopic-memory-atmospheric-persistence-241074 <div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>Chemical analysis of some of the world’s oldest rocks, by an international team led by Ã山ǿ¼é researchers, has provided the earliest record yet of Earth's atmosphere. The results show that the air 4 billion years ago was very similar to that more than a billion years later, when the atmosphere -- though it likely would have been lethal to oxygen-dependent humans -- supported a thriving microbial biosphere that ultimately gave rise to the diversity of life on Earth today.</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/boz_ngb_photo-web.jpg?itok=NsMqcNEd" width="160" height="120" /></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">14 </span><span class="month">January </span><span class="year">2015</span></div></div></div></div></div> Wed, 14 Jan 2015 15:16:55 +0000 webfull 107488 at /channels