University of Oregon researchers say wildfires can form cancer-causing compounds in the soils they burn through.

President Trump warned Iran not to kill protesters. A top Iranian official fired back to stay out of it, alleging the U.S.

A New Year's party at a Swiss Alpine bar turned into a tragedy after about 40 people died in a fire and another roughly 115 ...

Pea-size clusters of human cells called brain organoids inspire both hope and fear. Experts are debating how scientists can ...

President Trump's pressure campaign against Venezuela is the latest in a long saga of U.S. intervention in the region that is ...

President Trump's changing messaging, Congress' unprecedented demands and the Justice Department's piecemeal release of ...

President Trump has vetoed a bill to help finish a water pipeline in Colorado, saying it's about "fiscal sanity." Critics say the president's veto is a form of political retaliation.

President Trump's on-again, off-again tariffs on Chinese imports affected many U.S. businesses last year. We check in with one small business owner to ask what the year and holiday season were like.

Taiwanese President Lai Ching-te vowed to defend the self-ruled island's sovereignty in the face of what he termed China's ...

The protests began due to economic pressures, with Iran's currency rapidly depreciating. Demonstrators have also chanted ...

Former special counsel Jack Smith spoke with lawmakers behind closed doors in December. That testimony is now public.