Works by Peter Voulkos (“Molestar S24,” left) and Akio Takamori (“Standing Woman Vase”) are part of “California Clay” now on display at the Jackson Dinsdale Art Center at Hastings College.

Sacrifices of “sun stones” occurred around the same time a volcanic eruption in 2900 BC dimmed the sun throughout Northern ...

Volcanic Ash Clay, often referred to as "volcanic clay" or "lava clay," is a natural mineral-rich substance derived from the ash deposits of volcanic eruptions. It is celebrated for its numerous ...

Using ice core samples, researchers linked a natural disaster with a trove of nearly 5,000-year-old artifacts discovered at ...

"The ditches were subsequently closed.” Speaking with Salon, Iversen brought the Neolithic rituals to life by describing the ...