Do you ever have one of those days where you try to be a functioning adult who follows the news but…

Do you ever have one of those days where you try to be a functioning adult who follows the news but then realize you’ve spent the last hour of your life reading about whether or not it should be A Deal that Hillary Clinton used her personal e-mail account for business reasons and then think, “God, human beings are so exhausting?” Anyway, here is something short over at National Geographic about how chameleons use little crystals embedded in their skin to change color.