Scientists agree that burning fossil fuels has put enough carbon dioxide into our atmosphere to cause global temperatures to rise.
The single most important thing an individual can do to help communities achieve sustainable development is to make sure governments are putting these issues at the top of its agenda.
Many experts at the Earth Institute agree that these issues — global warming, sustainable energy, water, urban planning, declining fisheries, and deforestation, to name a few — must be addressed at the public policy level.
In addition to supporting leaders who place a high priority on these issues, you can also write to your political representatives and tell them that you support the Millennium Development Goals and the Millennium Project's recommendations for achieving them. You can also write letters to local newspapers.
The Web site of RESULTS.org also has a number of useful tools that can be adapted to help you target both politicians and media outlets in your own country.
Experts agree that without the political will, these crucial issues that are affecting six billion people will push society towards a more uncertain and dangerous future.