I satisfied myself with believing the rumour that ' real' nappies also harm the environment with the energy expended in cleaning them.
Times, Sunday Times (2007)
The energy expended on this perpetual urge to explore different locations can also be found in his work.
Times, Sunday Times (2011)
Instead of pounds or dollars or yen, it should have been in units of energy expended.
Radford, Tim & Leggett, Jeremy The Crisis of Life on Earth - our legacy from the second millenium (1990)