. >> sarah al amiri is minister of state for advanced science and science lead on the mars mission. hiring for the mission without regard to any old boys network meant new opportunities for highly qualified women. >> "having a small organisation, more of a start up culture that needs to develop at a very fast rate, where the objectives are very challenging. you no longer are able to discriminate against people and you have to get the best people to fulfill the job." >> still, there is a long way to go until gender equality is attained in many arab countries. nonetheless, the space centre has offered women like ayesha sharafi the opportunity to reach for the stars. >> and now from space we head back to earth. in 2015 there were around 1.3 bbilon vehicles on our planet: cars, mortobikes, buses most of them privately owned. forecasts suggest that by 2050 this figure could almost double to more than two and a half billion. the rapid rise in vehicles will be felt most in developing countries where air pollution is already a huge problem. electric vehicles like these buses in chile or min