If you Google 'Fibonacci' and 'Nature' you'll find a number of interesting pages about this mathematical sequence and how frequently it crops up in nature. Some of the places it appears make a lot of sense - compare the branching sequence in some plants with Fibonacci's original rabbit multiplication puzzle, but others are a bit more puzzling. An interesting intersection of math, nature and art.
As an aside, don't you think this person should be in CCS? I've had 'Horizontal asymptote' stuck in my head all day.