Have you ever noticed a large, fuzzy, brightly-colored ant moving rapidly along the ground? Commonly called velvet ants, these aren’t ants at all. They’re actually wingless wasps.

It's not clear yet how the money would be distributed among several states in a river basin where political fights and an impasse over how to share water long-term have persisted even during historic drought.

A Flagstaff woman has been arrested after her 17-month-old baby was found dead in a hotel room over the weekend.

Scientists and research organizations are urging Congress and federal officials not to overturn the management plan for the Grand Staircase-Escalante National Monument in southern Utah.

Energy Fuels Resources wants state regulators to allow higher levels of arsenic in a groundwater monitoring well. But two scientists have filed objections to the proposal.

Flagstaff police are investigating after an infant was found dead in a hotel room Sunday morning. Two other children were also inside the room, uninjured.

Africa races to contain a fast-spreading Ebola outbreak threatening 10 countries as infections spill from eastern Congo into Uganda.

The number of cases — and deaths — in Bangladesh is staggering. As of Sunday, 528 have died, mostly children. How did this measles outbreak begin? And how is the country responding?

President Trump took to social media Saturday and said the U.S. and Iran are close to deal on ending the war. But the president didn't offer details and it's not yet clear where Iran stands.

NPR's Ayesha Rascoe speaks with Dennis Carroll, PhD. about the current Ebola outbreak in the Democratic Republic of Congo and Uganda and how funding cuts to USAID have affected the response.

Texas' runoff primary elections are Tuesday. The race generating the most attention – and money – is the Texas Republican U.S. Senate primary between incumbent Senator John Cornyn and Texas Attorney General Ken Paxton. President Trump finally waded into the race last week and endorsed Paxton, even as ballots were already cast.