Contradicting the clichéd assumption that babes lack brains, Bollywood superstar Priety Zinta is clearly a thinking woman. ‘‘I want to urge people not to litter and turn our city into a big dump before we all die of diseases and toxic poisoning,’’ she fumes. The first thing on Zinta’s agenda is to ask the authorities to ban plastic bags in Maharashtra. ‘‘We have to stop using polythene bags. We must adopt brown bags. They have banned plastic in Shimla and it’s already looking good,’’ she reasons. Preity, we already have a law against plastic bags but it isn’t implemented. And brown bags, by which I assume you mean paper bags, aren’t a great option. Paper bags are made by cutting down trees that take more than 20 years to grow. When they are cut to spread literature and news and knowledge, maybe it’s worth it, but to make a paper bag that gets used just once? Terribly wasteful, in my opinion. Cloth bags are reusable and that’s the real answer. The sign of a mature society is when people give up a little convenience for the overall good of their environment. Carrying one’s own shopping bags is a small price to pay to pay for a cleaner city. And the price is truly small as you can see at www.badlani.com/bags/ Mumbaikars ought to be specially sensitive to this. Discarded plastic bags contributed substantially to creating the choking of drains that led to the recent floods the city experienced.