Feature

Infants Signal the Birth of Knowledge

Earth Science

Dolphin Sonar: Using Their Heads to Click

Clues to the Sex Chromosome Gender Gap

Diet Changes May Buy Cancer Patients Time

Flabby Teenage Years Presage Health Risks

Back Matter

Simulated Fullerene Tubules Act as Straws

Behavior

Astronomy

Basins of Froth

Two Distant Galaxies Provide New Puzzles