Valley fever, historically found only in the Southwest, is spreading. It can have devastating consequences.

(NBC News) The fungus that causes Valley fever is found in hot, dry environments. As the climate warms, scientists project its range will expand. Valley fever is an infection caused by breathing in spores of the fungus coccidioides. The spores can survive through heat and drought, lingering in the soil. When the dirt is disturbed — through construction, wind or even walking — the spores can be lofted into the air.