Delhi's great ex­per­i­ment

Down to Earth - - ON THE WEB -

For two weeks, Delhi reg­u­lated the flow of cars on its roads ac­cord­ing to the last num­bers of their num­ber plates, the odd-even ex­per­i­ment as the na­tional me­dia called it. The re­sults were en­cour­ag­ing on the first day of the year it­self, when the scheme came into force. Ac­cord­ing to a study done by the Cen­tre of Sci­ence and En­vi­ron­ment (CSE), PM2.5 lev­els came down on Jan­uary 1, prov­ing that Delhi's air can be pu­ri­fied if it low­ers its ve­hi­cle num­bers.

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