According to the GSMA -- an association representing mobile phone operators worldwide -- over 70 % of Africa 's one billion population will own a cell phone by the end of 2012 . New multi-purpose biomass stove generates electricity from sound waves created by cooking . Paul Riley currently undergoing field trials in Bangladesh and Nepal . Score-Stoves assisted Scottish researchers with thermo-acoustic technology .
New multi-purpose biomass stove generates electricity from sound waves created by cooking . Paul Riley currently undergoing field trials in Bangladesh and Nepal . Score-Stoves assisted Scottish researchers with thermo-acoustic technology .