This image released by PBS shows historian Niall Ferguson, host of “Niall Ferguson’s Networld,” a three-part series now streaming on the PBS site, on the PBS Video app and on YouTube. (Chimerica Media Ltd/PBS via AP)This image released by PBS shows historian Niall Ferguson, host of “Niall Ferguson’s Networld,” a three-part series now streaming on the PBS site, on the PBS Video app and on YouTube. (Chimerica Media Ltd/PBS via AP) The Associated PressNEW YORK -- Historian Niall Ferguson has a knack for timing his TV projects. "The underlying properties of social networks are the same as they were in Roman times. The TV series makes clear that everyone has their own personal social network and it determines the probability of getting sick in 2020.

Source: ABC News March 20, 2020 16:04 UTC