The authoritative guide to ensuring science and technology make life on Earth better, not worse.

herd immunity

The A1 Verse: The herd shot round the world

By Thomas Gaulkin | Special Topics

A woman receives a COVID-19 vaccine.

Can vaccinated people transmit COVID-19? The answer will be key to ending the pandemic

By Eileen Choffnes | Opinion

Watch the 2025 Doomsday Clock announcement on January 28