Global health is facing a tipping point. Scientific advancements have changed how we respond to epidemics like HIV/AIDS, tuberculosis, and malaria – and the pipeline of breakthrough innovations has never been stronger. But funding is down and priorities are shifting. Will the science come to scale so these diseases can finally be ended? Or will they surge instead? On The Threshold, reporters from around the world cover this unfolding crisis from all sides—talking to scientists, politicians, civil society leaders, pharmaceutical executives, and others. The Threshold is a seven-part Foreign Policy podcast hosted by acclaimed broadcast journalist Henry Bonsu and made possible through funding in part from the Gates Foundation.