With growing urbanization cities are increasingly suffering due to the abundance of built-in spaces, concrete, mortar and tarmac, urban heat islands, increasing frequency of extreme heat events and climate change. The sustainable development goal 11, emphasizes on developing green infrastructure which could minimize the environmental footprint of the cities. In this paper, we discuss the role of green infrastructure in carbon sequestration, mitigating atmospheric pollution, moderating temperature and mitigating climate change, and management of storm water. We also discuss biodiversity of green infrastructure and the latter as habitat of organisms, and provide an overview of economic value of trees in the urban areas. Keywords: Green infrastructure, carbon sequestration, urban heat island, pollution abatement, urban biodiversity. According to Chenoweth et al. (2018), the green infrastructure of a city comprises various "natural and semi-natural green spaces, including parks and gardens, amenity green space, allotments and city farms, cemeteries and churchyards, green corridors such as rivers or railway embankments, conservation and nature reserves, and archaeological sites". The concept of green infrastructure covers the quality and quantity as well as the multifunctional roles of urban and peri-urban green spaces, and emphasizes the importance of interconnections between habitats (Turner, 1996; Rudlin and Falk, 1999; Sandströ m, 2002; Van der Ryn and Cowan, 1996). According to Tzoulas et al. (2007), a well-planned green infrastructure can provide both a framework for economic growth and nature conservation. The objectives of developing green infrastructure include improving human health and wellbeing, urban aesthetics, biodiversity conservation, water management, sustainable land management, climate change mitigation and adaptation, job creation, and urban regeneration (Chenoweth et al., 2018). Urban green spaces are also important for developing proenvironment attitudes among people as found out by an interesting survey in Pune (Budruk et al., 2009). In this paper, we discuss the role of green infrastructure in mitigating atmospheric pollution, carbon sequestration, moderation of temperature and mitigation of climate change, and management of storm water. We also discuss biodiversity of green infrastructure and the latter as habitat of organisms, and provide an overview of economic value of trees in the urban areas. Pollution mitigation and Carbon sequestration Urbanization degrades the environment by replacing natural landscapes, with manmade materials (Nowak, 2006). Heat, and emissions of various kinds associated with urbanization, affect not only the local and regional landscape but also the health of local people (Nowak, 2006). Urban vegetation can positively affect the local and regional air quality by removing air pollutants and altering the urban atmosphere. Urban trees remove air pollution primarily through uptake via leaf stomata and other parts of the plant surface (Mullaney et al., 2015). An increase...