The Pentagone worm, which appeared and spread quickly on Tuesday, slowing near the end of the day as companies took measures to prevent infections, was still finding its way into systems in Europe on ...

Whether we are talking about our own hand or something seemingly so distant from an evolutionary perspective as the wings of an insect: In order to make an organ out of a multitude of cells, the cells ...

How do the cells in a human embryo know where they are located in the body and how they should develop? Why do certain cells form a finger while others do not? Biologists have explained the mechanisms ...