<aside> ... </aside>
HTML5 only. Represents content that is tangentially related to the surrounding content (a section, article, or other content flow), such as pull quotes, lists of links, advertising, and other content typically presented as a sidebar.
<h1>Important Experiment Findings</h1>
<p>First paragraph . . .</p>
<p>Second paragraph . . .</p>
<h1>For Further Reading</h1>
<li><a href="">Interesting Article</a></li>
<li><a href="">Another Interesting Article</a></li>
aside is a semantic section element. Its rendering is dependent on style rules.