There were thousands of years that Neanderthals and Homo sapiens inhabited the same regions in Europe. How much did these groups intermingle?

Now researchers observe that the more "human" a robot seems, the more active are the brain regions that think about the intentions and desires of others -- even if that other is a machine.

In Transcranial Direct Current Stimulation, an electrical current is applied to the head and passed to the brain. Preliminary results suggest that TDCS could enhance memory and learning.

While we can manipulate elaborate equations with square roots and derivatives, new research shows monkeys can “count” audible beeps and equate them to visual representations of the same amount.