Behavior of a spherical capsule in a pulsatile flow. A single capsule moving in the direction of the flow is superimposed. Fukuoka, Japan—As you read this sentence, trillions of cells are moving ...

Red blood cells normally cannot move on their own; they lack any of the cell structures needed for movement. Instead, they deliver oxygen throughout the body by going with the flow of blood. So, when ...

How is it that you’re alive? It’s a question that we rarely ask ourselves—but it’s one that has a definite answer. We all know our heart pumps life-giving oxygen throughout our bodies. How does that ...