We created an entry for the Young Glory brief "Cure Cancer" where the goal was to help scientists get access to healthy people's medical data in order to find a cure for cancer.
When a person discards their chewing gum, they leave behind valuable medical data, that doesn't need to go to waste. It's a simple and comfortable way of collecting data, unlike blood and urine tests. And it usually costs millions to clean up chewing gum from the streets. So why not use it?