Humans can ‘feel’ hidden objects under sand from 2.76 inches away, revealing the surprising power of remote touch.

Invisibility cloaks are making a splash. Or rather, preventing splashes, perhaps. Although the science fiction idea of an invisibility cloak is a Harry Potter–style device that makes objects invisible ...

Chase, Florence Elizabeth. 1934. "Effects of intensities and wave lengths of light on unicellular green Algae (with three plates)." Smithsonian Miscellaneous Collections, 92, (6) 1–27.