Thirty years ago, Rwanda’s government began a campaign to eradicate the country’s largest minority group. In just one hundred days in 1994, roving militias killed around eight hundred thousand people. Would-be killers were incited to violence by the radio, which encouraged extremists to take to...

Many Americans are losing faith in the benefits of internationalism. But whether it’s wars in the Gaza Strip and Ukraine, worsening extreme weather as a result of climate change, or the trade-offs of globalization, events abroad are increasingly having a local impact. At the same time,  more...

Unidentified flying objects (UFOs) are real. And the truth about them is often hidden from the public, for reasons related to national security. That secrecy has fed conspiracy theories about the possibility of alien life on Earth, creating a stigma around the legitimate scientific search for...