A bumpy snailfish, Andean mouse opossum and ancient sea cow were just some of the many species described in 2025.

If you’re a Tucsonan of a certain age, you might have fond childhood memories of catching horned lizards out in the desert. You also might be wondering where all the horny toads have gone. You’re not ...

During World War II, the governments of the United States and the United Kingdom approached the largest U.S. chemical and pharmaceutical companies to enlist them in the race to mass produce penicillin ...