Tree Plantation Drive In Delhi

NEW DELHI, INDIA - APRIL 25: The tree is being rehabilitated by the government officials after the National Green Tribunal court order, at Punjabi Bagh on April 25, 2015 in New Delhi, India. In the last 15 years, the capital of India has witnessed concrete expansion which has led to the loss of 32,000 hectares of Delhi's green cover. Adding to the problem, the peak pollution levels have jumped 44% from last year making Delhi the most polluted city in the world. The importance of trees in purifying the air, as natural resources, maintaining the ecological balance, preventing soil erosion, as medicines, habitats for faunal species, providing nutrients to the soil etc. is well known. (Photo by Sushil Kumar/Hindustan Times via Getty Images)