Will artificial intelligence someday rule the world? Will we tremble before our robot overlords? Not a chance, say the author of a new book.

More intelligent species of birds may spend longer in the nest and have more neurons in a specific area of the brain, research finds.

As of 2015, more than 170 million Americans had clinically concerning levels of lead in their blood when they were children, likely resulting in lower IQs.

We may be losing the ability to perceive our own intelligence because we can quickly google the answer to just about any question.

With a cue from sea slugs, researchers have taken a step towards making AI more reliable for use in surgical robots, self-driving cars, and more.

Face and brain development are tightly linked, research finds, but that doesn't mean facial features indicate intelligence.

Emotional intelligence may be far more important for entrepreneurs than previously thought, researchers report.

In a new study, people in middle age who had higher amounts of fat in their mid-section had worse fluid intelligence as they got older.

Why are some people faster at learning music than others? New research suggests intelligence is a key factor, more so than "growth mindset."

"Humanity has been lodging the same complaints against 'kids these days' for at least 2,600 years," if not longer. A new study suggests why.