when was science first used to solve crimes
Forensic science James Marsh was the first to apply this new science to the art of forensics. He was called by the prosecution in a murder trial to give evidence as a chemist in 1832. The defendant, John Bodle, was accused of poisoning his grandfather with arsenic-laced coffee. Marsh performed the standard test by mixing a suspected sample with hydrogen sulfide and hydrochloric acid. While he was able to detect arsenic as yellow arsenic trisulfide, when it was shown to the jury it had deteriorated, allowing the suspect to be acquitted due to reasonable doubt.[25]
Crime in the United States Crime in the United States has been recorded since colonization. Crime rates have varied over time, with a sharp rise after 1963, reaching a broad peak between the 1970s and early 1990s. Since then, crime has declined significantly in the United States,[1] and current crime rates are approximately the same as those of the 1960s.[2]