Step-by-step explanation:
Gitanjali Rao is a young American inventor, scientist, and writer who rose to fame at the age of 15 for inventing a device to test for lead in drinking water. She was named "America's Top Young Scientist" in 2017 by Discovery Education and 3M, and has since become a prominent advocate for using science and technology to solve real-world problems.
Rao was born in Colorado in 2005 and showed an early interest in science, technology, engineering, and mathematics (STEM) fields. At the age of 10, she started developing her first invention, a device to detect and measure lead contamination in water. The device uses carbon nanotubes and an app to provide instant readings, making it a potentially life-saving tool in communities affected by lead poisoning. Since then, Rao has continued to work on other projects, including an app to detect cyberbullying and a device to monitor prescription drug use for addiction prevention. Her work has earned her numerous awards and recognition, including invitations to speak at TEDx events and the United Nations. She is also the author of a book titled "Young Innovator's Guide to STEM," which aims to inspire young people to pursue careers in STEM fields.