At some point, you've probably heard the term "cup of Joe" used to describe coffee, and maybe you wondered why. It all ...

An intricate latte art creation shows a leafless tree on a coffee hill, with a moon-like swirl in the background. Coffee powder is used for the ground, and the tree is drawn with espresso.

People are often advised to stop drinking caffeine when it's hot out. I contacted three experts to find out if that's based on science.