1. Abbess, J. 2015. Renewable Gas. Basingstoke: Palgrave Macmillan.
2. ACS. 2015. “Diamonds from the Sky” Approach Turns CO2 into Valuable Products. American Chemical Society News, August 19.
https://www.acs.org/content/acs/en/pressroom/newsreleases/2015/august/CO2.html
.
3. Allen, M. 2016. Drivers of Peak Warming in a Consumption-maximizing World. Nature Climate Change 6: 684–686.
http://www.nature.com/articles/nclimate2977
.
4. Ambrose, J. 2018. Energy Networks Prepare to Blend Hydrogen into the Gas Grid for the First Time. The Telegraph, January 6.
http://www.telegraph.co.uk/business/2018/01/06/hydrogen/
.
5. Atlas Obscura. 2013. Lake Nyos Suffocated Over 1,746 People in a Single Night. Slate.
http://www.slate.com/blogs/atlas_obscura/2013/07/26/lake_nyos_killed_1746_when_it_released_a_huge_pocket_of_CO2.html
.