Tech Tuesday September 1, 2020 10:42 am Tech Tuesday: ‘PuriCare' Wearable Air Purifier Mike Proulx, advertising lecturer at Boston University, talks about Puricare, a wearable air purifier created by LG. US & World Videos 5:10 Mental health still suffers stigma in the medical and research fields 2:47 Students face disciplinary action for encampments 2:19 First responders testify in Karen Read murder trial 4:24 Karen Read trial | Takeaways from police, firefighter testimony 3:38 Tech Tuesday: TikTok testing ‘Notes'