Andreas Malm
David J.C. MacKay
M.Gopala Rao
Jeremy Rifkin
Peter M. Schwarz
Jan Szargut
International Energy Agency
Unknown Author
Bethany McLean
Thijs Van de Graaf
Kornelis Blok
John McPhee
Richard Rhodes
Gerald Manners
Benjamin K. Sovacool
Daniel Lacalle
Paul Roberts
Roland Wengenmayr
Fred J. Sissine