People value human-created art not just for its quality, but because it represents effort, intention and lived experience.

Peer review, in its modern form, began to spread in the 18 th and 19 th centuries, becoming standard in the 20 th century.

Cell division in large embryos is coordinated by spatial waves of Cyclin B–Cdk1 activity that spread through the cytoplasm and affect cortical contractility. However, ...