Tag: biology

  • Regenerate.

    Regenerate.

    New study reveals regeneration of amputated body parts is not always an ancient trait and scientists might need to rethink the way they compare animals with regenerative abilities. An international group of researchers including biologists from the University of Maryland found that at least four species of marine ribbon worms independently recently evolved the ability […]

  • Self-navigation…

    Self-navigation…

    Human eyes are insensitive to polarized light and ultraviolet radiation, but that is not the case for ants, who use it to locate themselves in space. Cataglyphis desert ants in particular can cover several hundreds of meters in direct sunlight in the desert to find food, then return in a straight line to the nest, […]

  • Tools: God. Humans. Apes.

    Tools: God. Humans. Apes.

    Flexible tool use is closely associated to higher mental processes such as the ability to plan actions. Now a group of cognitive biologists and comparative psychologists found out that the apes carefully weighed their options. To do so the apes considered the details such as differences in quality between the two food rewards and the […]

  • Imperfect evolution… Life without life…

    Imperfect evolution… Life without life…

    The pinnacle of beauty to most people is a symmetrical face, one without any major left-right differences. But for blind Mexican cavefish (Astyanax mexicanus), asymmetry may be a lifesaver. That’s because their lopsided skulls may help them feel their way along dark cave walls – similar to a person navigating by touch in the dark. […]

  • Smelling the forest… A tree born…

    Smelling the forest… A tree born…

    Animals are much better at smelling a complex “soup” of odorants rather than a single pure ingredient, a study by the University of Sussex has revealed. Prof Nowotny, Director of Research and Knowledge Exchange in the University of Sussex’s School of Engineering and Informatics, said: “Our study was looking at how olfactory receptors and brain […]