Avaaz

Facebook’s AI can’t spot Covid-19 disinformation on its own. But with human help, it can slow the spread. Facebook uses a combination of humans and neural nets to crack down on messages that make false claims about Covid-19, which may have deadly consequences.

YouTube is a great place to learn about new ideas — including some that have been thoroughly discredited. YouTube’s recommendation algorithm is helping spread misinformation about climate change, according to research by Avaaz, a self-funded activist group.