India, July 9 -- Delhi has launched its most ambitious afforestation drive in years but it will mean little unless it is matched by cutting emissions at their source

Delhi's ridge - the northern extension of the Aravalli hills that runs through the capital - has long been called the city's "green lungs." This week, that metaphor was given fresh political weight when Union Home Minister Amit Shah and Delhi Chief Minister Rekha Gupta planted saplings at the Central Ridge and Nanakpura Ridge to launch a campaign to plant 70 lakh trees across the capital, part of a broader push under the "Ek Ped Maa Ke Naam" initiative. The government has also launched a Green Drive Portal letting citizens book plantation slots, request free saplings and reg...