Alan Yu

Computer models helped decode whale communication. But some scientists say there are barriers that cannot be overcome.

Resident doctors from several major health care institutions in the region voted to form unions in the past two weeks.

Resident doctors at major Philadelphia-area hospitals voted whether to form unions.

The business has had a devoted local following for more than a decade.

Last year, one neighbor resorted to making signs that read, "Only a real jabroni would honk at the Miracle" and "Honking makes the baby Jesus cry."

This comes after a similar law went into effect in New York — the first in the country.

The Children’s Hospital of Philadelphia found nearly one in five patient families struggle to get enough food, and wanted to address it.

Eight years ago, construction workers discovered centuries-old human remains in Old City. Recently, descendants and researchers commemorated the reburial.

The bird flu virus continues to spread around the world, including in mammals like cows. Scientists are worried it could become a human virus.

They say patient care suffers because of bad working conditions and long hours.

The artificial leaf was a vision for moving beyond fossil fuels. Researchers have since run into obstacles, but continue to push the field forward.

The powerful animal tranquilizer has started appearing in the illicit heroin and fentanyl market in recent years.