Sustainable environment, free flying and occasional fun.
Joint US/China statement 13/04/2013:
The U.S.A. and the People's Republic of China recognize that the increasing dangers presented by climate change measured against the inadequacy of the global response requires a more… urgent initiative... Both sides consider that the overwhelming scientific consensus regarding climate change constitutes a compelling call to action crucial to having a global impact on climate change.
The “Dignity” revolution. 
