If you think back to your early years of biology class, you may remember learning about tiny cellular energy factories, called mitochondira. Mitochondria are microscopic powerhouses hiding within most cells and they play a huge role in our health. Damaged mitochondria can lead to a host of health issues. But healthy mitochondria can result in optimal aging. DNA Dan explains more on mitochondria, and how better understandings may help advance new approaches in the study of some diseases. -----...