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

July 14, 2020
 GZERO Media
Have Burning Questions about the Latest in the Pandemic? Ask an Epidemiologist | GZERO World

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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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Elon Musk is about to discover that politics is harder than rocket science

Elon Musk in an America Party hat.
Jess Frampton

Life comes at you fast. Only five weeks after vowing to step back from politics and a month after accusing President Donald Trump of being a pedophile, Elon Musk declared his intention to launch a new political party offering Americans an alternative to the Republicans and Democrats.

UK PM’s freefall is a warning to centrists

Chancellor of the Exchequer Rachel Reeves (right) crying as Prime Minister Sir Keir Starmer speaks during Prime Minister’s Questions in the House of Commons, London, United Kingdom, on July 2, 2025.
PA Images via Reuters Connect

UK Prime Minister Keir Starmer has struggled during his first year in office, an ominous sign for centrists in Western democracies.

Europe’s AI Act: World’s first guardrails or just a flashy head start?

- YouTube

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“We wanted to be first with a flashy AI law,” says Kai Zenner, digital policy advisor in the European Parliament. Speaking with GZERO's Tony Maciulis at the 2025 AI for Good Summit in Geneva, Zenner explains the ambitions and the complications behind Europe’s landmark AI Act. Designed to create horizontal rules for all AI systems, the legislation aims to set global standards for safety, transparency, and oversight.

Walmart’s US manufacturing investment is building stronger communities

Walmart

More than 60% of Walmart suppliers are small businesses.* Through a $350 billion investment in products made, grown, or assembled in the US, Walmart is helping these businesses expand, create jobs, and thrive. This effort is expected to support the creation of over 750,000 new American jobs by 2030, empowering companies like Athletic Brewing, Bon Appésweet, and Milo’s Tea to grow their teams, scale their production, and strengthen the communities they call home. Learn more about Walmart's commitment to US manufacturing. *See website for additional details.

Microsoft's 2025 Responsible AI Transparency Report

Microsoft

Last month, Microsoft released its 2025 Responsible AI Transparency Report, demonstrating the company’s sustained commitment to earning trust at a pace that matches AI innovation. The report outlines new developments in how we build and deploy AI systems responsibly, how we support our customers, and how we learn, evolve, and grow. It highlights our strengthened incident response processes, enhanced risk assessments and mitigations, and proactive regulatory alignment. It also covers new tools and practices we offer our customers to support their AI risk governance efforts, as well as how we work with stakeholders around the world to work towards governance approaches that build trust. You can read the report here.

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