Have you ever examined timber floorboards and pondered why they look the way they do? Perhaps you admired the super-fine ...

Christopher Gardner, Rehnborg Farquhar Professor of Medicine at Stanford Medicine, detailed his involvement in—and the progress to date of—the federal government’s Dietary Guidelines for Americans ...

The pollen membranes have qualities of shape, size, surface, and structure which permit these identifications, and their preservation is often excellent. An Introduction to Pollen Analysis By Dr ...