Explosive origins of 'secondary' ice—and snow

Where does snow come from? This may seem like a simple question to ponder as half the planet emerges from a season of watching whimsical flakes fall from the sky—and shoveling them from driveways. But a new study on how ...

Photos may improve understanding of volcanic processes

The shape of volcanoes and their craters provide critical information on their formation and eruptive history. Techniques applied to photographs—photogrammetry—show promise and utility in correlating shape change to volcanic ...

Exploring 3-D technology in pottery studies: 'It is the future'

In the depots of the Faculty of Archaeology, many artifacts, accumulated after decades of fieldwork across Europe and the Middle East, are stored. A new project, the Leiden Inventory Depot (LID), aims to unlock this wealth ...