It turns out that these are all climate-driven employment areas, too -- trends that will grow in demand as climates change because our urban plant life will have greater demands placed on it.

CNN: Commentary: Green way to create jobs, save cities

But what we really need is big, new ideas: new ways to distribute and store energy for electric power, new ways to conserve and distribute clean water for farming and gulping, and new ways get ourselves and our cargo around, so that we don't change the Earth's climates too much as we burn our fossil fuels.

CNN: 'The Science Guy' says: 'Save the Earth'

As high-resolution data about prehistoric climates accumulates, archeologists are looking for connections between climate change and human development.

CNN: Past may hold clues to climate's future