1. A murder in Arizona
1.1. A murder was committed in Arizona, US in 1992. Police found a suspect, however, there wasn't any evidence to convict him of the crime.
1.1.1. Suspect's truck was examined - seed pods were found.
1.1.1.1. The pods are identified as fruits of a parlo verde tree
1.1.1.2. A palo verde tree at the crime scene seems like it got hit by a truck
1.1.2. A geneticist did a DNA analysis of the found pod. The DNA of the seed match that of the parlo verde tree.
1.1.2.1. This proves that the truck had been to the crime scene, thus helps convict the suspect of the crime.
1.1.2.1.1. => Plants' DNA can help solve mysteries and crimes
2. A robbery case in Australia
2.1. In 2009, a leech was used to solve a robbery case
2.1.1. In 2001, a 71-year-old woman was robbed by two man
2.1.1.1. Detective found a leech filled with blood at the crime scene
2.1.1.2. The detectives analyze the DNA and kept it in the database.
2.1.2. 8 years later, police arrested a suspect on a drug charge
2.1.2.1. The suspect's DNA was examined and it matched that taken from the leech
2.1.2.1.1. The criminal was found <=
3. A body in the mountains
3.1. The Iceman
3.1.1. Europe's oldest mummy, lived about 5,300 years ago
3.1.2. Has wounds indicating that he died a violent death.
3.2. About the Iceman's death (using CT imaging technology)
3.2.1. Analysis at first:
3.2.1.1. An arrowhead inside the left shoulder was identified
3.2.1.1.1. Iceman was shot from behind
3.2.1.2. There's also a wound on one of his hands
3.2.1.2.1. Iceman was likely in a fight, chased and killed
3.2.1.2.2. The wound was beginning to heal
3.2.2. Later study:
3.2.2.1. The Iceman had a full stomach at the time he was killed
3.2.2.1.1. He had a big meal before his death and was resting, unaware of his killers
3.3. Conclusion
3.3.1. The Iceman was fleeing an earlier battle, and thought he was safe but later was murdered
3.3.2. Scientists continue to find more clues to Iceman's murder mystery using the latest technology