there's a cool preprint from a few weeks ago where they sequenced a collection of 34 years worth of air-filters in Sweden: lots of mammals! eDNA, just from air.

there's a cool preprint from a few weeks ago where they sequenced a collection of 34 years worth of air-filters in Sweden: lots of mammals! eDNA, just from air. https://www.biorxiv.org/content/10.1101/2023.12.06.569882v1 https://www.biorxiv.org/content/10.1101/2023.12.06.569882v1 Up to ~35% of the detected DNA was human (Fig S5)