What happens when the world runs out of fish? Does TikTok actually present a national security risk? Will Africa's population boom change the world as we know it? In season three, Why It Matters expl…

Is China exporting its authoritarian model to other countries? Is the “fast fashion” industry accelerating climate change? In season two, Why It Matters explores a new series of issues that are flyin…

How can the world create better medicines? More powerful solar cells? New batteries? The answers could come from a revolutionary research tool known as the quantum computer. It can seem like magic—ha…

Experts argue that Mexico affects daily life in the United States more than any other country. For years, U.S. and Mexican officials have attempted to tackle immigration, trade, and security challeng…

Before the Russian invasion of Ukraine, the possibility of nuclear war felt like a problem of days past. Now, as great-power competition heats up, the potential for nuclear conflict seems higher than…