TAILOR-MADE A semisynthetic strain of Escherichia coli makes glowing green proteins using amino acids not found in nature.
William B. Kiosses
ANOTHER WRINKLE The outer layer of the human brain has distinctive folds. Work with brains growing in lab dishes is showing how the structures may form.
STANDING OUT Scientists used to think that ribosomes, molecular machines that build proteins, are identical and interchangeable. But the micromachines are more diverse than previously thought, new research suggests.