Live~NRGY

Energy storage
Difference Engine: Air apparent

http://www.economist.com/blogs/babbage/2013/02/energy-storage

What I like especially is the comments display – way cool way to display MindMaps. Can you figure out the cautionary note to displaying information this way ??? Hint – think historically.

http://www.economist.com/conversation-cloud?days=1&ec_ini_tab=readerscomments&ec_tabs=readerscomments