Vital signs 2013

Tracking key trends in the environment, agriculture, energy, society, and the economy to inform and inspire the changes needed to build a sustainable world. From meat consumption to automobile production to hydropower, Vital Signs, Volume 20 documents over two dozen trends that are shaping our future in concise analyses and tables and graphs. While remarkable progress has been made over the past year, much remains to be done to get the planet on a more sustainable track.