Science & Tech

The geopolitics of science and technology: GZERO's news coverage and analysis of how scientific and tech developments impact the world's economy and society.

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Ask an epidemiologist: Harvard's Marc Lipsitch answers your COVID questions

Do masks really protect us? Are children less vulnerable to COVID-19? And why do scientists hope you avoid indoor bars? This week, GZERO World is taking all of our burning questions about the latest in the pandemic to a Harvard epidemiologist. Marc Lipsitch is a Professor in the Department of Epidemiology at the Harvard T.H. Chan School of Public Health and the Director of the Center for Communicable Disease Dynamics. So, he knows his stuff!

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Russian President Vladimir Putin welcomes US envoy Steve Witkoff during a meeting in Moscow, Russia, on April 25, 2025.

What We’re Watching: Another glitch in Russia-Ukraine talks, UK Labour Party to raise taxes to record levels, Tensions spike in Syria’s third-largest city

Argentine President Javier Milei at the Kaseya Center in Miami, Florida, USA, on November 6, 2025.

Hard Numbers: US banks’ Argentina bailout plan falls through, Trump threatens Dem lawmakers, India is latest heist site, Saudi investment fund is stretched, & More

An Israeli activist records illegal settlers driving past a village in Masafer Yatta in the West Bank, on October 28, 2025.

Hard Numbers: Israel arrests violent settlers, US House ends extended recess, Botswana eyes majority stake in diamond giant, & More

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