There's an excellent post on the official Google blog in which Kofi Annan, former Secretary-General of the UN, uses Google Earth technology to demonstrate the human effects of climate change:
Climate change is too often misunderstood to be simply an environmental issue, rather than a human issue. For our children and grandchildren, climate change is an issue of public health, economics, global security and social equity. This human side of climate change is explained in a new Google Earth tour narrated by former U.N. Secretary General Kofi Annan. Within these stories, you’ll find data and tools to explore this topic in more depth, and meet some of the people who are actively working on managing the risks of climate variability and change. We encourage you to take the tour to learn more about these human issues and the inspiring work of groups like the Alliance for a Green Revolution in Africa (AGRA) that are helping farmers cope with climate change. We hope this video will serve as a useful tool as educators help students around the world understand the complexity of this issue.
To continue reading visit here or watch the video below.