Scientists at the Mayo Clinic have found a way to immunize cats against FIV - feline immunodeficiency virus, which causes AIDS in cats. Millions of cats die from FIV/AIDS every year, to say nothing of the loss of human life from this disease. This week, researchers took a big step forward in the fight for both species. They have taken a genes from rhesus macaque monkeys that is known to block cell infection, as well as a jellyfish gene for tracking purposes -- which makes the kittens of these modified cats glow in the dark. Awesome!