Who's Raising Whom: The Galaxy or Its Black Hole
Growing a galaxy is like a dance between two partners: at the center of nearly every large galaxy sits a supermassive black hole, and they grow together. But who leads?
A Fly's Brain Teaches a Robot to Walk
The fruit fly Drosophila is a tiny creature with a brain the size of a poppy seed. It contains about one hundred thousand nerve cells, and scientists have already mapped all their connections, like a city subway map where stations are neurons and lines are the links between them. This map is called a connectome.