Heat rises, but what does that actually look like? The video shows many examples of air currents, such as a burning match and squeezing helium out of a balloon. It highlights common observations that are rarely seen such as gas vapors from rubbing alcohol, the many materials ejected from your mouth when you sneeze, and the cold air being poured out of a cup of ice. It also describes the setup enabling Schlieren imaging, so others can repeat the experiment themselves.