- Who’s to blame for pollution:  the government or the people?

- Where will we get our energy when we run out of oil?

- What will happen if we keep polluting the environment?

- Will the climate keep changing or go back to normal?

- Will science find a solution to the environmental problems we         have? What kind of solution will it be?

- In 50 years there are projected to be 10 billion people on the               earth. How will that affect the future?