It is crucial to learn the facts about how COVID-19 emerged to prevent future outbreaks. But China is rebuffing calls for further investigations focusing on Wuhan.

World powers continue to punish North Korea with economic sanctions, but the pressure has so far failed to push Pyongyang toward denuclearization.

A spate of train derailments, most notably in East Palestine, Ohio, has reinvigorated the debate over the nation’s railroad infrastructure. Here’s how U.S. rail could be brought up to speed.