Nature never ceases to give amazing pictures.
A close look of a leaf from an unknown plant at Arboretum SF . Below is a close look at the feathers of a bald eagle of SF Zoo (the national bird of USA). Staring longer upon these pictures there are some striking similarities. Although they are evolutionarily very distinct structures nature has enforced a main stem and branches (veins in case of leaves and barbs for feathers). If you think a little further the main stem/stream and branches are very predominant, even outside nature such as main stream fields and branches. Perhaps having a main stem/stream and branches is a fundamental phenomenon in the physical world that its nearly impossible for any system to not have it. More to follow up in forthcoming posts, for now just enjoy the pictures.
