Researchers tested more than 65,000 patients with more than 30 solid tumor types and found the rate of HER2 positivity was about 3%.

OBSERVER Photo by Braden Carmen Fredonia Superintendent Dr. Brad Zilliox, at a recent Board meeting, addressed testing results that revealed the presence of lead in the district’s water supply ...

The new chief said he hopes to make citizenship tests more difficult by increasing the amount of questions that applicants are required to answer.

Arizona's health agency levied a six-digit fine against Full Spectrum Lab amid complaints of corruption in the marijuana testing industry.

The Environmental Protection Agency released soil sample testing Wednesday at the local school district in Henry County for hexavalent chromium, a cancer-causing chemical.

An experimental birth control pill for males works by blocking sperm production, and it just passed its first safety test in humans.

At a community meeting, Union Pacific said air testing indicated safe levels in homes and shared processes for cleaning water contaminated by the spill.

Key Points Nvidia chief Jensen Huang predicts robotics will be the next $10 trillion industry.One particular fund, led by an investor known for focusing on innovation, could be the best way to ...

Arizona patient dies in emergency room from plague The patient was recently treated at an emergency department in Flagstaff and died the same day, Northern Arizona Healthcare said.