1. Toward a framework for national goals and policy research;Amara;Policy Science,1972
2. Climate commitment in an uncertain world: climate commitment;Armour;Geophysical Research Letters,2011
3. Wildcards—signals from a future near you;Barber;Journal of Futures Studies,2006
4. The greening of IT: paradox or promise?;Berthon;The Journal of Strategic Information Systems,2011
5. Biello, D. (2013). 400 PPM: Carbon Dioxide in the Atmosphere Reaches Prehistoric Levels. http://blogs.scientificamerican.com/observations/2013/05/09/400-ppm-carbon-dioxide-in-the-atmosphere-reaches-prehistoric-levels/ (10.03.15).