Who will save us from a killer asteroid?

The article discusses the conflicts created by near-earth objects (NEOs) that threaten life on Earth. An NEO is usually an asteroid and during its travels through space, come dangerously close to striking Earth. The author explains that different observing teams, several funded by the U.S. National Aeronautics and Space Administration, work to find NEOs and subsequently chart their paths in order to determine the threat they present to Earth.