BBC News - Home: Subways share universal structure

BBC News - Home The latest stories from the Home section of the BBC News web site.

Subways share universal structure May 16th 2012, 12:00 A study of the world's largest subway networks shows they share a number of mathematical features, irrespective of their age or location.

You are receiving this email because you subscribed to this feed at blogtrottr.com. If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions