Tech Insider
Two adult killer whales breach the water. One is rubbing against the other.
Two Southern Resident killer whales.
Engadget : Environment

Swiss scientists have developed a proof-of-concept method to collect environmental DNA (eDNA) from high-arching forest canopies, an under-observed habitat. Rather than hiring skilled climbers to risk their lives to grab a little bug and bird DNA, the team flew a collection drone into the trees to capture genetic material — giving them a clearer picture of the area’s organic breakdown.