117K views · 119 reactions | This precise technology improves everything from light reflection to the movement of fluids. But it started with one of the clunkiest of classroom staples — an overhead projector. [Advertiser content from 3M] | Vox | Facebook

In a new episode of our Netflix show, Explained, we explore how the coronavirus became a global pandemic and changed life as we know it. Stream “This Pandemic, Explained” now: http://www.netflix.com/coronavirusexplained | Vox

Feeling stressed? You're not alone. About 33% of people in the US were experiencing high psychological distress during the first few months of the coronavirus pandemic. Idris Elba explains how to cope in a new episode of our Netflix show, Explained: netflix.com/coronavirusexplained | Vox