Final answer:
Cold cases are often solved by advancements in forensic technology, especially through DNA testing, which can provide conclusive evidence even years after the crime was committed.
Step-by-step explanation:
Cold cases are often reopened and solved due to advancements in forensic technology, particularly in the field of DNA testing. As technology improves, methods to analyze biological evidence become more sophisticated, allowing old cases to be re-examined with new tools. The Innocence Project has highlighted the significance of DNA evidence in demonstrating wrongful convictions that happened due to factors like eyewitness misidentification. The intersection of technology and law has had profound implications, ensuring justice can be served even decades after a crime has occurred. By eliminating past uncertainties, DNA testing can offer conclusive proof of innocence or guilt, transforming the legal landscape.