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| New way of lasing: A 'superradiant' laser Posted: 04 Apr 2012 10:36 AM PDT Physicists have demonstrated a novel "superradiant" laser design, which has the potential to be 100 to 1,000 times more stable than the best conventional visible lasers. This type of laser could boost the performance of the most advanced atomic clocks and related technologies, such as communications and navigation systems as well as space-based astronomical instruments. |
| How social contact with sick ants protects their nestmates Posted: 04 Apr 2012 07:23 AM PDT Micro-infections have been found to promote social vaccination in ant societies. Like crowded megacities, ant colonies face a high risk of disease outbreaks. These are kept in check by the ants' "social immune system"— a set of collective hygienic behaviors and adaptive changes in interaction frequencies that acts in conjunction with the physiological, innate immune system of colony members. |
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