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Nearly All Vertebrates Descended From Ancestor With Sixth Sense
2011-10-12 04:49:05

A new study finds that sharks, paddlefishes and certain other aquatic vertebrates have a sixth sense: the ability to detect weak electrical fields in the water, and to use this information to detect prey, communicate and orient themselves. The study, which caps more than a quarter century of work, found that the vast majority of vertebrates — roughly 30,000 species of land animals (including humans) and a roughly equal number of ray-finned fishes — descended from a common...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.