Arsenic is a naturally occurring carcinogen widespread in the West. Levels in the drinking water at the Hopi Cultural Center average 12 parts per billion, slightly above the EPA’s standard of 10 parts per billion.
A research team from Northern Arizona University confirmed the presence of the endangered meadow jumping mouse in parts of Arizona and New Mexico. It’s the first regional survey in a decade, and the team is using ink to find the mice.
The Dark Energy Spectroscopic Instrument, or DESI, just got formal approval from the US Energy Department – it’ll help answer some long-standing questions about the universe’s expansion, among other things.