High-angle helix helps bacteria swim

(Phys.org) —A high-angle helix helps microorganisms like sperm and bacteria swim through mucus and other viscoelastic fluids, according to a new study by researchers from Brown University and the University of Wisconsin. ...

Muscle powers spearing mantis shrimp attacks

Mantis shrimps pack a powerful punch, whether they smash or spear their victims. According to Maya deVries and Sheila Patek from University of California, Berkeley, smasher mantis shrimps power their claws' ballistic blows ...

Critical protein discovered for healthy cell growth in mammals

(Phys.org) —A team of researchers from Penn State University and the University of California has discovered a protein that is required for the growth of tiny, but critical, hair-like structures called cilia on cell surfaces. ...

Bittersweet: Bait-averse cockroaches shudder at sugar

Sugar isn't always sweet to German cockroaches, especially to the ones that avoid roach baits. In a study published May 24 in the journal Science, North Carolina State University entomologists show the neural mechanism behind ...

How did we get four limbs? Because we have a belly

All of us backboned animals – at least the ones who also have jaws – have four fins or limbs, one pair in front and one pair behind. These have been modified dramatically in the course of evolution, into a marvelous variety ...

Why do we gesticulate?

If you rely on hand gestures to get your point across, you can thank fish for that! Scientists have found that the evolution of the control of speech and hand movements can be traced back to the same place in the brain, which ...

Research links evolution of fins and limbs with that of gills

The genetic toolkit that animals use to build fins and limbs is the same genetic toolkit that controls the development of part of the gill skeleton in sharks, according to research to be published in Proceedings of the National ...

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