How many murders go unsolved each year in the U.S.?

This entry is part 38 of 40 in the series Deep Questions

DNA. Carpet fibers. Fingerprints. Given the wealth of forensic information, you’d think police would solve each and every murder. Unfortunately, you’d be wrong. According to the Federal Bureau of Investigation, in 2004, 62.6% of homicides were “cleared,” leaving a substantial portion of murder cases unresolved.

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