2 Billion: The world’s population in 1927 was 2 billion.
7 Billion: The world’s population 2011 was 7 billion.
9 Billion: The world’s population is projected to be 9 billion by 2050. See also Vision 2050.
450 ppm: 450 parts per million (ppm) of CO2 in the atmosphere is a target intended to keep mean global temperature by 2100 to no more than 2°C above pre-industrial levels.
Application, App: Apps or applications are pieces of software that can run on servers in a data center, on a pc, on a personal device, or in the cloud. The ever-increasing use of apps by individuals, firms, and agencies will lead to ever-increasing energy use and e-waste if steps such as those presented in this book are not taken.
Bottom of the Pyramid: ...