In this excerpt from "Playful," Cas Holman surveys the research that brought the neuroscience of play into the mainstream.

Humans, unlike robots, can't produce identical results consistently, but Pulitzer Prize-winning author Charles Duhigg suggests we can channel our natural curiosity and creativity toward achieving our personal goals and passions.

Here are three ways to do it better.

Astrobiologist Betül Kaçar on why the simple act of asking questions (without needing a reason) is one of the most powerful things a human can do.

Most of us think we're good listeners, but we're wrong — and it's ruining our relationships.