PHOENIX — The dry conditions in Arizona are leading to some unwanted pests showing up earlier this year. “The scorpion population is breeding early,” said Sage Garvey, director of technical operations ...

This year's early heat waves have caused scorpions and rattlesnakes to emerge sooner than the animals' typical seasons.

An early-season heat wave in the U.S. Southwest is prompting increased activity from scorpions and rattlesnakes, experts say. The “anomalously early and record-breaking heatwave” is expected to ...

Venomous activity is spiking months early in Arizona as record March heat drives rattlesnakes and scorpions out of dormancy ...

Scorpions‘ ancestors first appeared around 450 million years ago. That’s as old as sharks, older than dinosaurs, and even older than trees. Scorpions evolved from these early arthropods, known as ...

A Utah fossil shows early relatives of spiders and scorpions already had distinctive front claws 500 million years ago.