In a study published on Mar. 31, scientists at Queen Mary University of London have demonstrated that DNA can be harvested from the air for the first time. This discovery could help forensics researchers, anthropologists and even identify airborne diseases like COVID-19. In what ways does this technique work?
Collecting eDNA from the air
The lead author, Dr. Elizabeth Claire, states the study was initially intended to assist conservationists and ecologists while studying biological environments.
With enough development, though, it could be used for much more. Forensics units could take DNA samples from the air to check if they were present at a crime scene.
It could also help medical practitioners understand how airborne viruses spread, such as the one behind COVID-19.
Currently, social distancing guidelines are based on estimates of how far away virus particles can spread because of physics laws. However, scientists could collect objective evidence to support such guidelines using this technique, said Clare in a ScienceFocus article.
Practical applications are still a long way off. Several private organizations like NatureMetrics are already developing practical applications.
The limitations are easy to see - you want this in areas where you may know what DNA to expect, so it may not work very well in crowded rooms or outdoors. Nonetheless, the option could be advantageous in situations where surfaces don't provide clear answers.
Although this new technique has a long way to go, it will benefit many people shortly. It also provides a new way to obtain DNA and discover information about the world around us.
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Written by Lionell Moore
