a freezer malfunction damaged brain samples that were critical to the study of autism and could set researchers back ten years. tough to hear that sort of news. plus, out of control. the wildfires in colorado and new mexico have now turned deadly. we'll get the latest right from the front lines. and the millionaires and billionaires, on a buying spree of american real estate. matt gutman takes us on a tour of some of miami's priciest pads that foreign investors are oftentimes buying with all cash. >> if you want to get jealous and feel about your own living room right now stay tuned for that story. amazing properties. amazing money. you won't believe it. >> crazy money being thrown around like it is play money. first, the latest health challenge facing our dear friend, "gma" co-host, robin roberts. this time she will need a bone marrow transplant. >> after sharing her prognosis