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Dogs tune into the tone of human voices. What about goats? To find out, goatologists ran an experiment to see if goats could tell the difference between a happy-sounding human and an angry one.

Large scavengers like vultures and hyenas do an important job in protecting human health. But studies show these creatures are on the decline, allowing for the emergence of disease.

It's the Fourth of July, and to commemorate the holiday, the Up First newsletter asked readers to share what freedom means to them. And, this one secret will give you the perfect summer pasta salad.

The virus is the enemy, NIH Director Francis Collins said. "It's not the other people in the other political party." Omicron, which could soon become the dominant strain, is extremely infectious.

As the Winter Olympics begin Friday, China is welcoming the world at a time when Beijing's aggressive foreign policy is creating friction with several other parts of the globe.

In a preemptive move, United, Delta and others canceled dozens of flights scheduled for Friday. They say the omicron spike has left them with staffing shortages.

Justices seemed more open to the vaccine mandate for almost all workers at hospitals, nursing homes, and other medical providers receiving federal Medicare and Medicaid funds.

But the court upheld a separate mandate for almost all employees at hospitals, nursing homes and other health care providers that receive federal funds.

Previous versions of the coronavirus didn't transmit as easily outdoors thanks to airflow that dispersed viral particles. But what about the highly transmissible omicron variant?

Nancy and Ronald Reagan's legacy on HIV/AIDS and the stamp's unveiling during Pride month have led members of the LGBTQ+ community to criticize the Biden administration and the Postal Service.