Scientists have pulled off a mind-bending quantum experiment that sounds almost impossible: they showed that tiny metal ...

Although modern cameras can, with skill and good conditions, produce photographs nearly indistinguishable from the original scene, this fidelity relies on the limitations of human vision.

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 ...

Scientific caution: Avi Loeb praised the release but stressed that many UFO images could have natural or technical causes. Historic accounts: Files span decades, from Apollo moon missions to 1960s FBI ...