Watermark [0] and The Anthropocene[1] are both phenomenal. In fact, in terms of cinematography, I think Watermark is the best. Manufactured Landscapes was absolutely earth-shattering in my own consideration of humans and our ecologies though.
If you find yourself liking Burtynsky may I also suggest checking out Richard Misrach and the classic book of Manfred Hamm photography, Dead Tech [2].
(We'd be remiss to leave out the contributions of Jennifer Baichwal to all three films and Nicholas de Pencier on The Anthropocene.)
Burtynsky's environmental trilogy is worth exploring in full: Manufactured Landscapes (2006), Watermark (2013), and Anthropocene: The Human Epoch (2018).