Texas health and wildlife officials have detected avian flu in at least four mammal species across six counties on the High Plains.

A USDA bird flu response plan, updated in May 2017 during Trump’s first administration, incorporated policy guidance based on lessons from influenza outbreaks during the Obama and first Trump ...

Tallies for three measures on Tuesday’s special election ballot didn’t change much in updated results released by Clark County’s elections office Thursday. Read story ...

In addition to the 27 worst cities for each pollutant listed above, the 25 most polluted counties for ozone and particle pollution are ranked in the tables below.