Latest Sam Krevor Stories

2009-03-07 08:28:27

To slow global warming, scientists are exploring ways to pull carbon dioxide from the air and safely lock it away.

Word of the Day
  • 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'.