TED TALK: Is the Grand Canyon for Sale

https://www.youtube.com/watch?v=71jvm2Pq0Us

WATCH: Peter’s 750-mile trek across Grand Canyon National Park.

https://www.youtube.com/watch?v=lLDc1Ib1acg

LISTEN: NPR 1A podcast with Erik & Peter

https://www.npr.org/2021/10/03/1042831854/seeing-silence-one-photographers-mission-to-find-the-worlds-quietest-places

READ: Seeing the Silence book excerpt in Nature magazine. 

https://www.nature.org/en-us/magazine/magazine-articles/book-excerpt-search-for-silence/