<iframe width="580" height="385" src="https://www.youtube.com/embed/2MF11lNXhK8?rel=0" frameborder="0" allowfullscreen></iframe> <br>Watch the full talk at #cosmology #physics #time #whatistime The Institute of Art and Ideas <br><a href="https://www.youtube.com/watch?v=2MF11lNXhK8">source</a>