- Cell division, minus the cells
- Divide and rule: Raven politics
- Bats will hang out with their friends this Halloween
Posted: 31 Oct 2014 10:35 AM PDT
Researchers have reconstituted cell division -- complete with signals that direct molecular traffic -- without the cell. Combining frog-egg extracts with lipid membranes that mimic the membrane of the cell, they built a cell-free system that recapitulates how the cleavage furrow is assembled.
Posted: 31 Oct 2014 09:09 AM PDT
Mythology has attributed many supernatural features to ravens. Studies on the cognitive abilities of ravens have indeed revealed that they are exceptionally intelligent. Ravens live in complex social groups and they can gain power by building social bonds that function as alliances. Cognitive biologists have now revealed that ravens use a 'divide and rule' strategy in dealing with the bonds of conspecifics: Socially well integrated ravens prevent others from building new alliances by breaking up their bonding attempts.
Posted: 30 Oct 2014 11:22 AM PDT
New research has shown that despite moving house frequently, bats choose to roost with the same social groups of 'friends.' The study found that different social groups roost in separate, though adjacent, parts of woodland. The findings have important implications for conservation.
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