with many strains ten times stronger than steel and a rapid growth cycle of four to five years bandra is one of most eco friendly building materials on the planet. and the middle east to engineering graduates in gaza have created an environmentally friendly break called green cake this uses coal and wood ashes a fill it instead of sand making use of waste that would otherwise be buried in the ground. and and guatemala one nonprofit has built a school using natural resources and rubbish that would normally pile in landfills the organizations made a system out of old tires capable of holding thousands of gallons of rainwater materials like these and many paving the way for a green a probe that redefining the spaces we inhabit. singapore is a low lying island city state eighty percent of its population live in high rise public housing resulting in one of the highest population densities in the world challenges for rapid urbanization sea level rise and an increasingly chaotic climate is forcing planners and architects and cozy makers to respond to questions about how cities of the future

you know the weather is no respecter of bandra is nor indeed is pollution this video here is from lahore and i we've been looking at delhi in the last few days but this is the same sort of thing visibility is very low and it is unfortunate and harmed by polluting chemicals from both manmade sources and otherwise with the wind to trap now there is some hint of a bit of movement in the satellite picture you know some clouds are drifting around which might give you some hope as it is always same system and we got a good shot from nasa driven satellite here this is where you see lahore new delhi and all of this area is underneath either fog or smog now we know it's smog in new delhi we haven't got the same sort of measure equipment in lahore so it might be just fog but on the whole it looks like these are the air quality conditions hazardous we know in delhi slightly better know about probably has this whole the only way you can move this is either by raining heavily so it or getting a wind up a movie both are unlikely but temporarily that might just happen the questions happening in the nex