Uploaded April 2026 | Updated September 2026, 2 weeks ago

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What happens when the systems designed to keep us safe stop working the way we think they do?

In this clip from a two-part TEDMED Conversation, investigative journalist Katherine Eban and host Jay Walker examine a controversial hepatitis B study in Guinea-Bissau—and what it reveals about trust, oversight, and the fragility of scientific institutions.

As public confidence in medicine and science continues to shift, this conversation asks a deeper question:
Who decides what is safe, what is ethical, and what is true?

This is Part 1 of a two-part conversation exploring the intersection of science, accountability, and global health.

Watch the full episode, April 14th
Part 2 release: April 21st

Featuring:
Katherine Eban, investigative journalist and author of Bottle of Lies
Jay Walker, Curator, TEDMED

Topics covered:

Scientific integrity and trust
Global health and clinical trials
Medical ethics and oversight
Institutional accountability
The Guinea-Bissau hepatitis B study

#TEDMED #GlobalHealth #MedicalEthics #Science #PublicHealth #KatherineEban #ClinicalTrials #Healthcare #TrustInScience