2008年世界环境日的主题是“KICK THE HABIT! TOWARDS A LOW CARBON ECONOMY"，“踢除旧习,迈向低碳经济”。联合国环境规划署 (UNEP) 要求各国政府，企业，社区关注如何采取措施，减少温室气体的排放，今年世界环境日将重点放在如何促进建立低碳经济体系和生活方式，如提高能源效率，寻找替代能源，保护森林及生态友善消费等。UNEP 并提出踢除二氧化碳习惯的12步骤，以及庆祝世界环境日的80种方法。

举办世界环境日庆祝活动的方法有很多，包括街头集会，单车游行，绿色音乐会，举办校内作文及绘画比赛，植树活动，跳蚤市场，清扫活动等。许多国家利用这些一年一度的庆典活动，从政治上提高政府和公众对环保事务的关注程度，以及促使各界采取环境行动。

各个国家与政府首长通常会利用世界环境日这个机会发表演说，承诺将全力以赴，部分更为严肃认真的承诺，还确实促进设置了各种正式的环境管理和经济规划机构，这些庆典活动为签署或批准各项国际环境公约提供了良好的机会。

今年从4月地球日到6月环境日，都是围绕着气候变迁，节能减碳的主题，这是全球的环境趋势，希望从国家到个人，都能确实采取行动，踢除大量制造二氧化碳的旧习惯，朝向低碳经济国家与低碳省生活迈进，距离2008世界环境日只剩不到一个月，赶紧想想可以用什么方法来庆祝世界环境日，还有可以采取什么踢碳行动来改变旧的碳习惯，期待大家齐心一意来减碳，采取低碳经济做法，共同迈向低碳生活！

World Environment Day, commemorated each year on 5 June, is one of the principal vehicles through which the United Nations stimulates worldwide awareness of the environment and enhances political attention and action.

The World Environment Day slogan for 2008 is Kick the Habit! Towards a Low Carbon Economy. Recognising that climate change is becoming the defining issue of our era, UNEP is asking countries, companies and communities to focus on greenhouse gas emissions and how to reduce them. The World Environment Day will highlight resources and initiatives that promote low carbon economies and life-styles, such as improved energy efficiency, alternative energy sources, forest conservation and eco-friendly consumption.

World Environment Day can be celebrated in many ways, including street rallies, bicycles parades, green concerts, essay and poster competitions in schools, tree planting, recycling efforts, clean-up campaigns and much more. In many countries, this annual event is used to enhance political attention and action.

Heads of State, Prime Ministers and Ministers of Environment deliver statements and commit themselves to care for the Earth. Serious pledges are made which lead to the establishment of permanent governmental structures dealing with environmental management and economic planning. This observance also provides an opportunity to sign or ratify international environmental conventions.

On this World Environment Day, let us examine the state of our environment. Let us consider carefully the actions which each of us must take, and then address ourselves to our common task of preserving all life on earth in a mood of sober resolution and quiet confidence.

The day's agenda is to give a human face to environmental issues; empower people to become active agents of sustainable and equitable development; promote an understanding that communities are pivotal to changing attitudes towards environmental issues; and advocate partnership, which will ensure all nations and peoples enjoy a safer and more prosperous future.