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Latest Jim Copeland Stories

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2009-05-16 14:25:00

Archaeologists are studying how early Navajos used smoke signals to notify others of invaders.The researchers and volunteers have flare guns and will spread across the Four Corners Saturday to test the ancient alarm system.There are 200 pueblitos that the archaeologists think were constructed by Navajos to defend themselves against Spanish explorers and rival tribes."If you hear an enemy approaching, you climb into these things and pull up the ladder, and you can seal yourself in for a...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.