Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't ...

A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...

A lucid dream is one in which the person is aware that they’re dreaming and can either exert some control over the dream, or passively observe its unfolding while maintaining awareness that it’s a ...