12-Year-Old Scientist Creates Lead Detection Test For Water

Gitanjali Rao's invention won her the 2017 Young Scientist Challenge.

Via CBS News:

After devising an instant test for detecting the amount of lead in drinking water, 12-year-old Gitanjali Rao hopes to continue inventing. What's next?

I want to create a happiness meter, which measures the amount of seratonin in your body or the amount of gamma rays. And I still have to figure out how this works.