Think you've got a pretty good handle on the idea of time? Twenty-four hours in a day, 60 minutes in an hour, 60 seconds in a minute, etc.?
Seems simple enough, but humans actually can't have any real concept of time in the grand scheme of our reality—Earth has existed for 4.5 billion years! Hard to grasp? Let Buzzfeed put it into layman's terms with this video, which seeks to point out just how our perception of time is convoluted. It also teaches us fun facts like, "If you compressed Earth's history into 24 hours, humans have existed for this one minute."
Makes that term paper you're freaking out about seem kind of trivial, eh?