Why Dont We Have Cancer Sniffing Dogs

There are a lot of stories out there about dogs who seemed to smell lung cancer on their owners breath, and a recent study found that some dogs can detect lung cancer in blood samples with astonishing accuracy. So why arent there domestic dogs trained to detect cancer in every hospital on the planet Hosted by: Hank Green SciShow has a spinoff podcast It s called SciShow Tangents. Check it out at Support SciShow by becoming a patron on Patreon: Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D. A. Noe, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters Looking for SciShow elsewhere on the internet Facebook: Twitter: Tumblr: Instagram: Sources: