Why Do We Have Fingerprints?

In 1910, Thomas Jennings fled a murder scene, but he left behind a clue that would seal his fate: a perfect impression of his fingerprints in the drying paint of a railing, outside the house where he’d committed the crime. Jennings’ fingerprints were the first ever to be used as evidence in a criminal investigation, and they led to his conviction for murder in 1911.

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Normal Bad Mood or Depression?

The transition from childhood to the teenage years can be a difficult time. Hormones in the body can affect a young person’s emotions and moods. As children grow they usually want to pull away from parents and develop their own personality. So, they may talk or act differently as a teenager.

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NASA’s Mars 2020 to prepare for humans into deep space

America’s space agency is nearing completion of a vehicle that will search for evidence of past life on Mars. It is too cold and dry for life to exist on the surface of Mars today. But scientists hope the rover will find evidence of life that once lived on the planet.

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