Selected papers of the week (26.to.30.10.09)

Self-Recognition and Ca2+-Dependent Carbohydrate–Carbohydrate Cell Adhesion Provide Clues to the Cambrian Explosion

Tensor networks—a new tool for old problems

A limit on the variation of the speed of light arising from quantum gravity effects

The role of DNA shape in protein–DNA recognition

Unraveling the structure of DNA during overstretching by using multicolor, single-molecule fluorescence imaging