Will the challenges facing social media extend to the rest of Big Tech? The outlook for the housing market amid rising bond yields. China ramps up efforts to get COVID vaccines out to the masses.

Two top tech watchers weigh in on calls for more regulation on social media giants such as Twitter, after it permanently banned President Trump's account. Plus, the chief economist of First American Financial says the housing market will continue to be strong in 2021, even amid rising rates. And, China aims to vaccinate millions of people in the coming weeks, but there are plenty of questions about the safety and efficacy of its COVID treatment.