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Latest Francis A. Macdonald Stories

2014-07-08 23:00:19

The Geological Society of America will recognize outstanding scientific achievements and distinguished service to the profession at its 2014 Annual Meeting & Exposition in Vancouver, British

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2010-03-05 07:33:29

Scientists find signs of 'snowball Earth' amidst early animal evolution.


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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