The video is a bit buggy for the first 3 and half minutes or so, but it it fixed around 3:23. In this causalcourse.com guest talk from Susan Athey, Susan talks about estimating heterogeneous treatment effects with causal trees and causal forests.

Mentioned links:
https://www.aeaweb.org/conference/con...
https://drive.google.com/drive/u/0/fo...