World

Find all of the PBS NewsHour’s international reporting and analysis.

Following 42 days with no new cases, thousands of residents gathered in Sierra Leone on Saturday, as the U.N. World Health Organization declared an end to the outbreak that killed 3,589 people and more than 221 health workers since it…

President Barack Obama has rejected TransCanada's application to build the controversial Keystone XL pipeline across the United States. He said Friday that “shipping dirtier crude oil into our country” would not increase America’s energy security.

Greatly reduced since its Cold War heyday, some say the U.S. nuclear arsenal is overdue for an overhaul. The PBS Newshour got exclusive and unprecedented access to labs and facilities across the country to observe how the B-61 nuclear bomb…