Science News Archive - June 11, 2003

By Randy Dotinga, HealthDay ReporterHealthDayNews -- Identical twins who share tight emotional ties along with their genes may be boosting their life spans, researchers report.But such close bonds don't appear to do anything to extend the lives of fraternal twins, says study author Malcolm D.

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'.