AIDS Has Killed Almost 36 Million People, But I Bet You've Never Heard The Real Origin Story

Scientists have pieced together the origin of AIDS, and the tale is ludicrously interesting. Take a few minutes to learn how one of humanity's most debilitating diseases grew into the monster it is today.

Next bit of Upworthiness:

Flash Video Embed

This video is not supported by your device. Continue browsing to find other stuff you'll love!

Hey, Internet Friend. Looks like you're using a crazy old web browser, which is no longer supported. Please consider upgrading to something more modern—for a better experience, and a safer time online. We only want the best for you.

Download Google Chrome, and try it for a week. Don't think about it, just do it. You'll thank us later.