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Snake Eyes: Threats Cause Change In Blood Flow To The Eyes In Snakes
2013-11-05 04:13:07

Snakes can optimize their vision when they perceive a threat by controlling the blood flow in their eyes, according to a new study from the University of Waterloo.


Word of the Day
pawl
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.
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