Research regularly serves up surprises about how people behave in various circumstances. Take this test to find out whether ...

Optical illusions, like the figure-ground type, challenge our perception. A new illusion reveals hidden shapes: an elephant or trees. Spotting the elephant suggests a grounded, resilient personality, ...

Einstein’s theory of general relativity explains that gravity is caused by a curvature of the directions of space and time. The most familiar manifestation of this is the Earth’s gravity, which keeps ...