<ul style={ul_style}>
                  <li>background on this particular app, please read <a href='https://medium.com/@mikefabrikant/the-project-f1f90c2a29b7'>this</a>.</li>
                  <li>an article that explains how mobility can be generated from cell phone usage, please read <a href='https://medium.com/@mikefabrikant/cell-towers-chiefdoms-and-anonymized-call-detail-records-a-guide-to-creating-a-mobility-matrix-d2d5c1bafb68'>this</a>.</li>
                </ul>