When it comes to the billions of neurons in your brain, what you see at birth is what get -- except in the hippocampus. Buried deep underneath the folds of the cerebral cortex, neural stem cells in…

By analyzing medical records gathered over three decades on more than 11,000 Americans participating in a federally funded study, researchers at Johns Hopkins Medicine say they have more evidence…

Though they are called giant viruses they're still among the tiniest denizens of the microbiome. A few genes' worth of DNA or RNA folded into a shell so small you need an electron microscope to see…