DNA testing

April Alley has requested DNA testing in the case of her father, Sedley, who was executed for the 1985 murder of Marine Lance Cpl. Suzanne Collins. Now the courts must decide if the estate can lobby for such testing.

This is just one example of how DNA collection can harm or help investigators.

The family of Cameron "Todd" Willingham, unjustly executed in 2004, urge to test DNA in Sedley Alley's case—which was never done before Alley was executed in 2006.

"Giving the bones to the Halbachs confirms the State's belief that not only were they human—they belonged to Teresa Halbach," said Kathleen Zellner.

Once DNA sampling begins, the process could take six months to obtain the first results. A number of other obstacles will likely slow the process.

Scott Michael Johnson, 26, has been identified as the 1,642 victim in the World Trade Center attacks of September 11, 2001.

The lawsuit claims the Idaho Falls reproductive specialist told the couple he would use the husband's sperm mixed with a donor's sperm, but instead used his own.

"A rapist rapes on average seven to 11 times before they're caught," Wayne County Prosecutor Kym Worthy told the Detroit Free Press. "Of our set of 817, over 50 of them have 10 to 15 hits apiece."

An earthquake struck Lechaion somewhere between 50 and 125 A.D., and the majority of the ruins have since been buried beneath sediment.

History is written by the winners—unless newly revealed DNA evidence sets the record straight.

Learning your ancestry just got a lot more complicated. 

Amid concerns raised by government bodies, the event has been put off.

Jury decides Atlas Logistics Group Retail Services must pay two employees for forcing them to submit to a DNA test.