Forensic techniques have improved immensely in the past number of years, providing lawmakers with better tools to secure a just conviction.
But, that’s not to say that it’s easy - as just one tiny, single fiber from a glove or jacket could be the difference between convicting or releasing a potentially violent criminal.
Prof. Angela Gallop CBE, is a forensic scientist, and author of ‘How to Solve a Crime: Stories from the Cutting Edge of Forensics’ - she joined Jonathan to discuss.
Also joining Jonathan was Dr. Shane Bergin & Dr. Lara Dungan to go through the week's top science stories in Newsround.
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