The climate changes and warm global come out from greenhouse gas emissions caused by human activity. Gas emissions increase global temperature and bring severe environment impact such as storm and rising sea level. These problems threat ecosystem , economy and biodiversity. The most fundamental impacts on ecosystem, economy, and quality global life are caused by burn of fossil fuels, such as,coal, gas, oil ,as well as , deforestation and  intensive agricuture. Increasing temperature brings adverse effects to health life, heated-related illness, infectious disease and poor air quality. In order to rise to the challenge we should rethink our development model, reduce gas emissions, promote renewable energy and take sustainable farming practices. Although many argue that individual actions will preserve environment , I think collective efforts has a far greater impact on recover environment. The most single significant individual action in my opinion to preserve environment come from people that elect governments committed to advancements sustainable and defend real interests of people . if so , we’ll have a habitable planet for humankind.