santiago de chile is chock a block with buses most of which run on diesel the toxic fumes they emit damage the environment and put people's health at risk but things are changing in the form of these buses they run on electricity making them quiet and emission free and get on the lot more they're far cleaner than other buses and that's great for our air quality here. santiago's air pollution levels sky high and every day around two point four million vehicles battle their way through the capital. the new e.p. says can travel around two hundred fifty kilometers per charge up and to make sure they never run out of power the city has implemented a detailed charging. daughter we're going to have in each area you can charge seven buses and at the same time the. one that the bus has finished charging automatically starts up in the next waiting bus but you know. right now santiago has around one hundred electric buses in february another one hundred are set to join them over the coming decades the city aims to completely replace its fleet of six and a half thousand diesel buses. that we have a lo