
Encounters with the Keeling Curve
A geologist recounts his first experiences with the celebrated graph that proved CO2 levels are rising
Volcanologist Wendell Duffield spent 30 years working for the U.S. Geological Survey before retiring in 1997. He is the author of Chasing Lava: A Geologist's Adventures at the Hawaiian Volcano Observatory (Mountain Press Publishing Co., 2003) and other volcano-related books.

Encounters with the Keeling Curve
A geologist recounts his first experiences with the celebrated graph that proved CO2 levels are rising

Hawaii Volcano Terms Explained [Slide Show]
From a'a to vog, a guide to the terminology used to describe the ongoing eruption of Kilauea

Kilauea’s Next Eruptions May Mirror a Big One in Its Past
A giant 1924 explosion, when steam jets blew boulders from the summit, had many of the precursors we see now

How Kilauea’s Lava Invades Neighborhoods
Following underground routes, molten rock moves from crater pools to people’s yards