makrand ghodke and his team are in charge of monitoring mumbai's mangroves. they use maps and satellite images to identify the location and size of mangrove ecosystems in the city. >> sometimes they resort to extreme measures. early this year, after a tough court battle, they demolished an illegal settlement in a mangrove area. in the past four years, ghodke has had about 3000 huts pulled down, earning himself the nickname "demolition man." >> sometimes i'm asked how i can demolish people's huts. but mumbai's population is skyrocketing. mangroves that protect the city are being destroyed. how can we not take action? >> within the sanctuary, the forest service is getting a helping hand from germany. the g.i.z. development agency is building an information center and a park here. it's also supporting an initiative to persuade local businesses to make a voluntary commitment to preserving biodiversity. the initiative's organizers say some companies are cooperating but in g geral, it''s hard to convince them. the forest service sees healthy mangroves as the key to