How Much Should Clean Air Cost? Innovating Affordable DIY Purifiers - Thomas Talhelm
22:31
Is an $800 purifier best to clean your home's air? We lab tested 5 top brands
17:40
DIY Purifier tests show that clean air is cheap and easy | Thomas Talhelm | TEDxIISERPune
50:21
The Trump Administration and the American Economy | UChicago Harper Lecture Series
29:18
How Bioelectronics Could Heal Our Bodies And Minds, with Bozhi Tian
47:06
Bequests: From Start to Finish
22:22
How Effective Are Air Purifiers In Your Home? | Talking Point | Full Episode
7:42
Shop Air Filter System VS Box Fan | Surprise
32:21