For the past two thousand years, the pope has been a major player in global affairs. He is frequently called upon to act as a peace broker, a mediator, an advocate, and an influencer; and with over 1…

The killing of George Floyd, the anti-racism protest movement that followed, and the Donald J. Trump administration’s response have shaken the United States and captivated the world. Why It Matters s…

A U.S. president can launch a first-strike nuclear attack at any time and, according to the law, does not need to seek advice first. Some experts think that’s too much power to put in one person’s ha…

Industrial overfishing and other man-made factors have pushed one-third of the world’s fish stocks to be threatened with extinction, and many other species are not far behind. The problem represents …

As climate change accelerates, some scientists are researching ways to alter our climate to slow down warming. But the method, called solar geoengineering, comes with some serious risks.