New drugs and surgical techniques offer promise in the fight against cancer, Alzheimer's, tuberculosis, AIDS, and a host of other life-threatening diseases. Animal research has been, and continues to be, fundamental to advancements in medicine. ↗
The answer to old age is to keep one's mind busy and to go on with one's life as if it were interminable. I always admired Chekhov for building a new house when he was dying of tuberculosis. ↗