There is bad news and good news for the owners of ageing human brains.

"It is not that stem cell transplantation doesn't work, it is just that we need more work to figure it out." With this kind of simple optimism, and a little green jasmine tea, Professor Brent Reynolds chatted with Fiona Wylie about life, coincidence and the use of neural stem cells to treat spinal cord injury.

Brain and mind disorders, watch out -- Australia's neuroscience researchers are coming after you.