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

Watch the 2025 Doomsday Clock announcement on January 28


Jon Christensen

Twitter

Jon Christensen is an adjunct assistant professor in the Institute of the Environment and Sustainability at UCLA and an executive producer of Earth Focus at PBS SoCal.


Articles by Jon Christensen

The central coast of California, with the Diablo Canyon nuclear power plant in the background.

An Indigenous future for nuclear power in California?

By Jon Christensen, Matthew Crotty | Nuclear Energy
Harry Reid

Harry Reid’s lowercase “green new deal”

By Jon Christensen, Graham Chisholm | Climate Change
Firefighters work near the Getty Center in Los Angeles on October 28. Thousands of residents were forced to evacuate their homes after a fast-moving wildfire erupted.

A not-so-hot take on California fires, climate change, smoke waves—and the stories we need, to survive

By Jon Christensen | Climate Change