Index finger up, middle fingers down, pinky up, thumb in: the standard rock 'n' roll salute. It's a safe bet to say concert- goers will scream, raise their arms high and flash the sign while Ozzy ...

Imagine waiting for incoming passengers at the arrival gate at the airport. Your visual system can easily find faces and identify whether one of them is your friend's. As with other tasks that our ...

Pattern recognition receptors (PRRs) are expressed by cells in the body in order to sense molecules that are associated with infection or tissue damage. They are important for activating the immune ...