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| Neuroscientists use snail research to help explain 'chemo brain' Posted: 03 Oct 2014 06:20 AM PDT It is estimated that as many as half of patients taking cancer drugs experience a decrease in mental sharpness. While there have been many theories, what causes "chemo brain" has eluded scientists.  |
| Big-headed ants grow bigger when faced with fierce competitors Posted: 02 Oct 2014 11:18 AM PDT The big-headed ant (Pheidole megacephala) is considered one of the world's worst invasive ant species. As the name implies, its colonies include soldier ants with disproportionately large heads. Their giant, muscle-bound noggins power their biting parts, the mandibles, which they use to attack other ants and cut up prey. In a new study, researchers report that big-headed ant colonies produce larger soldiers when they encounter other ants that know how to fight back.  |
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