Architectural relics and modern structures show that we may not be much different than our ancestors.

ARCHEOLOGISTS recently discovered what appears to be the other half of Stonehenge, illuminating what they believe is a much larger Neolithic complex than has long been envisioned. What is coming to the surface seems strangely familiar. Looking closely at Stonehenge and other Neolithic sites, we find the formative patterns of our modern world. (continued...)

I don't exactly remember how, but I ended up reading the wikipedia entry for "Cul-de-sac" and the footnotes led me to this very interesting article about the ill-consequences of that icon of suburbia with the funny French name. (continued...)