Biomedicine An enzymatic sex difference Gender difference in heart disease may be due to enzyme. Cigars linked to heart disease. Migraines may increase risk of heart disease. Physics Chemistry smoothes out silicon surface Etching silicon with an acid can make the surface perfectly flat, offering atomic level control of features on computer chips. Electrons swirl into crystal array Swirling an electron cloud can mimic what happens in turbulent fluids.
Foamy silk reveals clues about the structure of the protein.
The lack of effective detection methods hinders removal of the 100 million land mines buried around the world. A growing line of research emphasizes the influence of collective beliefs about fairness and morality on economic practices.