Mitochondria live within us and supply energy to our cells, including neurons, but they become less mobile as our bodies mature, making it harder for us to repair brain cells as adults. This breakthrough study shows that enhancing the mobility of mitochondria along neuronal axons enhances the ability of mouse nerve cells to repair themselves and regrow after injury or disease. Read this very clearly presented article to see how we may be able to begin curing our own aging brains very soon. You can actually see the mitochondria at work. Fascinating.