Health & Science

A study finds the percentage of U.S. teens and young adults reporting mental distress, depression and suicidal thoughts and actions has risen significantly in 10 years.

‘What’s the point of preparing for a future if you won’t have one?’ said Philly’s lead organizer, Sabirah Mahmud, 16.

A look at the tough choice fertility patients face — and what that’s meant for thousands upon thousands of unused embryos.

New Jersey's medical marijuana program has seen a 150 percent increase in the number of patients participating since Gov. Phil Murphy took office, the Democrat said Thursday.

Leah Still is nearing four years in remission and her father has become an author, motivational speaker, and an inspiration.

Lawmakers consider expanding end-of-life options, but not for people with Alzheimer’s disease.

Japan has ambitious goals to become the “hydrogen society,” and right now, the focus is on its automakers.

Primatologist Frans de Waal discusses his new book, "Mama's Last Hug" about wide range of emotions that animals display.and what they tell us about ourselves.

A group of prominent scientists and bioethicists is calling for a global moratorium on any new attempts to bring gene-edited babies into the world.

Drugmakers add inactive ingredients to stabilize medications and sometimes to help the body absorb active ingredients. But the inactive constituents can cause side effects.

Last year, China drastically cut back its imports of plastic waste to recycle. Now the U.S. and other wealthy nations must figure out what to do with their discards.

The Earth is sick with multiple and worsening environmental ills killing millions of people yearly, a new U.N. report says.

Three Mile Island Alert is asking federal regulators to analyze what the group calls a “potentially dangerous and risky condition” at Exelon's Three Mile Island plant.

The Allegheny County Health Department revised an order against U.S. Steel that required it to significantly curb emissions from three of its Pittsburgh-area facilities.

First responders in Pennsylvania have been reporting a recurring problem when reviving overdose victims. Often, they're helping the same people, over and over.