Swimming in a pool of syrup would be difficult for most people, but for bacteria like E. coli, it’s easier than swimming in water. Scientists have known for decades that these cells move faster and farther in viscoelastic fluids, such as the saliva, mucus, and other bodily fluids they are likely to call home, but didn’t understand why.
School of Arts & Sciences
Biological molecules are chiral. Like gloves, they have either left- or right-handed versions that can’t be superimposed on one another. Macromolecules like DNA are also chiral and are exclusively made of building blocks with the same handedness.
Madeleine Joullié of the School of Arts & Sciences is highlighted for being a recipient of the John Scott Award.
The Organization of World Heritage Cities has voted to name Philadelphia as a World Heritage City.
Lauren Sallan of the School of Arts & Sciences is highlighted for leading research that shows ancient mass extinction led to dominance of tiny fi
Emilio A. Parrado is concerned about how immigrants incorporate into new communities.