Science

The magic of “stem” cells

People, animals, plants– all begin with a single fertilized cell that divides, and divides, and divides again. These undifferentiated “stem” cells are identical to each other, and in human beings each cell possesses the capability […]

Wonder

Bubbles in the universe?

Real estate bubbles. Dot-com bubbles. And now— bubbles in the universe? Well, yes. In the Milky Way, anyway. It appears that a few million years ago—the mere blink of an eye in celestial time—our little […]