Globe braces for more powerful variants 

Wednesday, June 9, 2021 - 4:16pm

The White House has been under pressure to do more to address worldwide vaccine shortages. Those shortages are especially acute in less wealthy nations, where the spread of powerful new variants means the worst of the pandemic may be yet to come. Author Zeynep Tufekci talks with The World’s Marco Werman about the Delta variant of COVID-19 and why it's gotten a lot more ominous.