
Carbon Dioxide and World Climate
That the atmospheric content of carbon dioxide is increasing now seems well established. As a result some latitudes could become warmer and wetter, but the effects may not all be bad

Carbon Dioxide and World Climate
That the atmospheric content of carbon dioxide is increasing now seems well established. As a result some latitudes could become warmer and wetter, but the effects may not all be bad

The Resources Available for Agriculture
The physical resources of earth, air, fire (energy) and water are large but are essentially fixed. The biological and social resources, however, are far from being pressed to the limit

Food and Population
The earth and technology can probably provide food for a population of 40 to 50 billion. Increases infood production would help to create the conditions that would stabilize the population at a lower level

Water
Men need water to drink and for many other purposes but by far the largest amount of water they have available must go to agriculture. Again the basic need in the proper utilization of water is education

The Trenches of the Pacific
The floor of the great ocean is incised with tremendous furrows. The bottoms of several are farther below sea level than Everest is above it. They are clues to the history of the earth's crust