Doñana national park in Spain has lost most of its water supply to human activities, and the wildlife there are in danger.

India hasn't enough water for all the human activity, and riots are breaking out about a decision of how to divide it up.

In Spain, the problem is due to business, but the amount of agriculture in the world today is a problem because of human population. With only one billion people, we would have no problem.

In India, the problem is directly related to overpopulation. India must curb its population growth to have a chance of lifting its people out of poverty.