Every species on the planet has a few evolutionary advantages that are key to survival. For us humans, it's the ability to use tools. Granted, we're not the only species that knows how to use them, ...

Add Yahoo as a preferred source to see more of our stories on Google. In the series, "Operation Paperclip" is frequently mentioned, alluding to a secret government program to recruit Nazi scientists.

Nazi scientists, some of them tied to war crimes including horrific concentration camp experiments, brought to the U.S. in a secret program to advance American security interests during the Cold War.

It took a herculean effort to launch mankind into outerspace. The people behind a project known as Operation: Paperclip are the main reason why we were able to reach for and grab the stars. Strap in ...