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

Have Burning Questions about the Latest in the Pandemic? Ask an Epidemiologist | GZERO World

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!
Global conflict was at a record high in 2025, will 2026 be more peaceful? Ian Bremmer talks with CNN’s Clarissa Ward and Comfort Ero of the International Crisis Group on the GZERO World Podcast.
Think you know what's going on around the world? Here's your chance to prove it.
Indian Prime Minister Narendra Modi isn’t necessarily known as the greatest friend of Muslim people, yet his own government is now seeking to build bridges with Afghanistan’s Islamist leaders, the Taliban.
The European Union just pulled off something that, a year ago, seemed politically impossible: it froze $247 billion in Russian central bank assets indefinitely, stripping the Kremlin of one of its most reliable pressure points.