Tiny ocean creatures known as sea sapphires perform a sort of magic trick as they swim: One second they appear in splendid iridescent shades of blue, purple or green, and the next they may turn invisible (at least the blue ...
Sep 02, 2015 in Materials Science
In Jamestown, Virginia, in 2013, archaeologists digging beneath a church built in 1608 made a remarkable discovery in the chancel: four graves. The coffins were long gone, victims of decay, but the coffin nails remained.
Sep 01, 2015 in Archaeology & Fossils