On smoggy mornings I count grey buildings instead of clouds, and that makes my heart cough louder than my lungs. So I dug into data, toured computer-controlled factories, and watched exhaust shrink by 57%. Today I’ll share how lithium-ion hearts and smart machines can turn poisoned skies into blue playgrounds for our kids. Technology isn’t just gadgets—it’s our super-tool to steady the planet and let future laughter shine brighter than factory smoke. 2024：Zhai Boyu, a student from Qingdao Hainuo Bilingual School This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx