Professor <a href="https://en.wikipedia.org/wiki/Mark_Horowitz" class="extiw" title="en:Mark Horowitz">Mark Horowitz</a> giving a talk at the EPFL
<a href="//commons.wikimedia.org/wiki/User:Rama" title="User:Rama">Rama</a>
CC BY-SA 2.0 fr
<span class="int-own-work" lang="en">Own work</span>