Comparing something to a grain of sand is usually supposed to mean that it's small or insignificant, but Dr. Gary Greenberg's microscopic photography aims to turn this stereotype on its head. His photographs of miniscule grains of sands reveal that each...

Comparing something to a grain of sand is usually supposed to mean that it's small or insignificant, but Dr. Gary Greenberg's microscopic photography aims to turn this stereotype on its head....