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

Watch the 2025 Doomsday Clock announcement on January 28


Alex Hearn

Alex Hearn is a Bulletin intern and a fourth-year undergraduate at the University of Chicago, where he is studying public policy, with a specialization in nuclear policy. 


Articles by Alex Hearn

What role could nuclear power play in limiting climate change?

By Robert Rosner, Alex Hearn | Climate Change, Nuclear Energy

Cruising through a melting Northwest Passage

By Alex Hearn | What We’re Reading

Climate changes where the Olympics can be held

By Alex Hearn | Climate Change, What We’re Reading

Crowdsourcing the environment of Fukushima and beyond

By Alex Hearn | What We’re Reading

Artificial intelligence: Can we control it?

By Alex Hearn | Technology and Security, What We’re Reading