Chimpanzees have long been known for their intelligence, but one famous experiment revealed a memory ability that stunned ...

NEW YORK -- Think you're smarter than a fifth-grader? How about a 5-year-old chimp? Japanese researchers pitted young chimps against human adults in tests of short-term memory and, overall, the chimps ...

One memory test included three 5-year-old chimps who'd been taught the order of Arabic numerals 1 through 9, and a dozen human volunteers. They saw nine numbers displayed on a computer screen. When ...

Chimpanzees are some of the smartest creatures on Earth, sharing about 98% of their DNA with humans. Their brains work in ways that constantly surprise scientists, showing abilities we once thought ...

The more we try to understand chimpanzees, one of our closest relatives, the more we find ourselves humbled by the richness and complexity of their lives — and of their intelligence. Today, on World ...