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• n  a process existing in or produced by nature (rather than by the intent of human beings)

• natural action
• action
• activity

News & Articles

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• Navy Researchers Put Dark Lightning to the SWORD
  Discovered “by accident” by NASA’s Fermi Gamma-ray Space Telescope in 2010, dark lightning is a surprisingly powerful — yet invisible — by-product of thunderstorms in Earth’s atmosphere. Like regular lightning, dark lightning is the result of a natural process of charged particles within storm clouds trying to cancel out opposing charges. Unlike “normal” lightning, though, [...]
  June 14, 2013 - Universe Today