/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 Ï㽶ÊÓƵ 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