What this post isn't: Examples of rhythm in nature, a treatise on how life parallels rhythm or how rhythm is where music began
What it is: An appreciation of rhythm
Take a metronome pulsing at a fair clip. Add a second metronome that beats at half the speed, synced with the first and you have your basic 4/4 going. Turn this system on and leave it by a kettle of water on medium heat. Come back in 6 minutes and look at how the bubbles in the boiling water react to the sound.
Fine, so there's no relation...but there could've been.