Instead of giving birth to a child, bacteria divide in half when they grow old, creating two new bacteria cells. But bacteria become damaged as they age just like humans do, so where does all this damage go?

Recently, scientists have tried to break into the secret world of microglia (the brain’s immune cells). They are trying to figure out how these cells can shape-shift into weird and wonderful formations.

Alzheimer's and other brain diseases affect millions of people. Jeffrey Kordower and his colleagues are learning more about these neurodegenerative diseases so that we can try to treat them.

Cancer, damaged DNA, COVID-19... our bodies deal with diseases and damage all the time, and finding that damage as early as possible can be helpful to fighting it. Joshua LaBaer has dedicated his career to solving health puzzles, and learning how to detect diseases earlier than ever before.