NEW YORK—Historian Niall Ferguson has a knack for timing his TV projects.

He debuted his examination of the global financial system in “The Ascent of Money” just as the 2008 economic crisis was hitting. Now he has returned with a series that helps us better understand the new conronavirus disease.

“Niall Ferguson’s Networld” from PBS (US Public Broadcasting System) is a look at the rise of online social networks like Facebook and Twitter, but it also explores the same principles that are a matter of life and death as the globe confronts a killer virus.

“Whether it’s a financial crisis or a pandemic, you can find very similar dynamics,” he says. “You’re dealing with the ways in which things go contagious through social networks.”

The three-part series—streaming now at its PBS site, on the PBS Video app and on YouTube—shatters the cool facade of Silicon Valley. Ferguson looks into world history to find similar disruptive technologies like the printing press and telegraph and reveals principles of network science to show the internet follows ancient rules.

“There are many things about our world that are new and unprecedented, but actually technology has just made the networks bigger and faster,” he says. “The underlying properties of social networks are the same as they were in Roman times. ”The series is an engaging tour through the past and into science, skipping gracefully from Paul Revere, William Randolph Hearst and Ella Fitzgerald to the Reformation and studies about how crickets coordinate their sound. Ferguson has adapted it from his bestselling book “The Square and the Tower.”Smart

Stephen Segaller, the vice president of programming at WNET who has collaborated with Ferguson on several series, said “Niall Ferguson’s Networld” manages to make exciting some very abstract ideas.

“I think he gathered together a lot of smart threads to create this overall picture,” Segaller said. “This was a huge challenge. In other series, Niall has been striding across landscapes—walking through the Forbidden City or standing in Sarajevo talking about history—but this series the challenge was it doesn’t take place in any physical spaces to speak of.”

Ferguson admits he initially bought into the promise of the internet—that it could create a global community, a utopia, even. But the more he looked at it the more he saw the downsides—the undermining of democracy, the swift movement of noxious content, the rise of billionaires like Mark Zuckerberg at the top of the pyramid.

“We definitely were very susceptible to the Silicon Valley Kool-Aid that once we were all connected, everything would be awesome. I believed that for a time,” he said.

“I’m pretty sure most people did because email was so cool and websites were so amazing. And Google was such a boom. And Facebook was astonishing. We were very, very disinclined to think that there could be downsides.”

He suspects many people seem to think they are getting free services from online hubs like Google and Facebook. In fact, we are actually handing over to them our personal information, and much too easily.

“I think we’ve slightly misunderstood the central relationship in the internet age, which is we give our data and we get services in return. We’re really underpricing our own personal data.” —AP