One thing we've learned, as a site that likes to publish reader-friendly science articles, is how much of the stuff that comes our way is, well, worthless.
No one pictures their sweet grandma strafing the border with an AK-47 in one hand and a Molotov cocktail in the other, raining down death and destruction as epic as her homemade apple pie. But it does happen.
The whole gift-exchange scenario is a lose-lose situation. Science has spent a surprising amount of time studying it an everything you thought you knew is wrong.
