Video | Communicable Disease

Benjamin Rubin: Bifurcated needle | Heroes of Progress | Ep. 32

The jet-injector gun could deliver 25 smallpox vaccines per vial. Benjamin Rubin's bifurcated needle could deliver more than 100.

Alexander C. R. Hammond — Sep 17, 2021

Read the full article about Benjamin Rubin here.

Suggested Readings

Blog Post | Poverty Rates

Modern Freedom Beats Feudal Serfdom

Marian L. Tupy — Sep 12, 2025

Blog Post | Communicable Disease

Why We Don’t Worry About Scarlet Fever Anymore

Chelsea Follett — Aug 18, 2025

Blog Post | Water & Sanitation

Grim Old Days: James Salzman’s History of Drinking Water

Chelsea Follett — Sep 12, 2024

Blog Post | Science & Education

Introducing Our Upcoming Book, Heroes of Progress

Human Progress Team — Feb 27, 2024