The Heart of a Blue Whale Heart

The heart of a blue whale is the largest in the world, but it took five years to get one on display. A hummingberg's heart can beat 12 hundred beats per minute - that's about the physical limit for a mechanical device. Pumming birds' hearts are four or five times larger relative to their body size than those of humans. The human heart is like the pinnacle of design and we have to get away from this view with your book.