Here is the video of my talk at the conference Mathematische Arbeitstagung 2017 (in honor of Yuri I. Manin) Max-Planck-Institut fur Mathematik, Bonn, Germany   Here is the video of my talk at the conference K-theory in Algebraic Geometry and Number Theory (2017) Hausdorff Research Institute for Mathematics, Bonn, Germany Here is the video of my talk at the conference Cohomological Realizations of Motives, Banff (2014) Banff International Research Station for Mathematical Innovation and Discovery, Canada Here is the video of my talk at the conference Reimagining the Foundations of Algebraic Topology (2014) Mathematical Sciences Research Institute, Berkeley Here is the video of my talk at the conference Interactions between Noncommutative Algebra, Representation Theory, and Algebraic Geometry (2013) Mathematical Sciences Research Institute, Berkeley