This is a fluorescence image of a neuronal growth cone in cell culture. Mature neurons extend processes called axons and dendrites. Immature neurons form these processes by forming neurites, which have growth cones at their tips. Growth cones collects sensory information from the environment, and establish synapses (the connection points between neurons).
Georg Simmel (1858 - 1918) For Kant the question was "What is nature?" but for the German sociologist, Georg Simmel, the question was, "What is society?" Most biographers regard Simmel as an incredibly creative theorist, and his ideas have helped form the foundation of modern urban sociology, symbolic interactionism, and social network analysis.
Greek photographer Chris Kotsiopoloulos captures a staggering 24 hours of day and night in just one photograph, in Sounio, Greece. http://www.huffingtonpost.co.uk/2012/04/19/24-hours-in-one-photo_n_1436506.html