For more than 10 years, he says he has bought and sold apartments where a tenant died an unnatural death, paying a third less than the market price and later selling at a healthy profit.

WSJ: Hong Kong's Real-Estate Boom Conjures a Scary Development

Vigo County attorney Timothy Fears said that under Indiana law a county coroner may conduct an autopsy in the case of an "unnatural death" -- including an execution -- but does not have to.

CNN: Timothy McVeigh

But excited researchers say that apo E is rapidly emerging as the first-found of a set of mysterious genes that roughly determine how long a person will live, provided he or she escapes an "unnatural" death from bacteria and viruses, war, accidents, unhealthy diet, smoking or other environmental happenstance.

WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live