The potential of mobile telephony to transform Africa will only be achieved if the development of other infrastructure keeps pace, says a study. The number of mobile phone subscribers in Africa soared from 16 million in 2000 to 376 million in 2008, with 60 per cent of the population using them in 2008 compared with 10 per cent in 1999.

Emissions of CO2 and other greenhouse gases can be reduced significantly using existing technologies, but stabilizing concentrations will require a technological revolution because it will require fundamental change, achieved within a relatively short period of time.