narrator: ranjan behn was finally able to quit her job. narrator: ranjan behn encourages her son to further his studies. narrator: it's something that's been driving parth since he graduated from high school, and a goal that his company supports. narrator: parth realizes that solar energy is the wave of the future and specializing in this field could help him to fulfill his dreams. narrator: the success of the canal top project in vadodara has prompted the government of india to offer incentives to other states interested in building similar systems throughout the country. [women speaking arabic] announcer: women in lebanon taking control of their own destinies. [overlapping voices in multiple languages] announcer: a young filmmaker shares his passion to save the planet. sebastien pins and his forest, with his own images and in his own words. [birds singing] [sebastien speaking french] announcer: coming up on a future episode of "21st century"... in china's guangdong province, recycling electronic waste, or e-waste, is a multi-million- dol