A Flagstaff scientist has a new idea about how mountains form on Io, the volcanic moon of Jupiter. 

Susannah Porter

Microscopic fossils in the Grand Canyon show evidence of a vampire-like predator that punctured its prey to suck out the innards.

Arizona Geological Survey

Geologists believe a string of earthquakes this month in the Northwestern part of the state are not building up to a larger quake. Arizona Public Radio’s Justin Regan reports.


Astronauts could be at risk for lung diseases if they ever make extended visits to the Moon. That’s the implication of a study that used volcanic soil from northern Arizona as a substitute for lunar dust.

Victor Leshyk

A fossil discovered in southern Utah adds a turtle with a pig nose to the list of animals that roamed with the dinosaurs.