external In the Media July 24, 2023 Peter Valentin, a senior lecturer of forensic science, comments on police detectives' use of discarded DNA, such as garbage put out at the curb, which can be taken and sampled from those under suspicion of a serious crime. https://www.usatoday.com/story/news/nation/2023/07/20/police-are-using-surreptitious-dna-collection-to-solve-cold-murder-cases/70427941007/# :~:text=The%20case%20illuminates%20a%20tactic,belongs%20to%20suspected%20serial%20killers. peter-valentin news-all news-in-the-media year-2023 month-july name-peter-valentin