Optical illusions, like the figure-ground type, challenge our perception. A new illusion reveals hidden shapes: an elephant ...

For just a few hours, shimmering waves of calcium move through cells in the developing eyes of fruit flies. These spontaneous ...

For most of our evolutionary history, human activity has been linked to daylight. Technology has liberated us from these ancient sleep-wake cycles, but there is evidence sunlight has left and ...

Are we born or made this way? Short answer: It's both. Reviewed by David Susman, PhD Are we born with our personality ...