Dr. Fatih Birol, executive director of the International Energy Agency, calls for investment in Africa’s energy sources.

Researchers are still figuring out how people define well-being across countries and cultures. Happiness is a factor, but ...

That year, French mathematician Évariste Galois finally illustrated why this was such a problem—the underlying mathematical ...

The blackout that engulfed the Iberian Peninsula on Monday was chaotic and stressful for many. But it had a silver lining.

In an unusual twist in the governor’s race, a wealthy Democratic businessman is suing former Los Angeles Mayor Antonio ...