Humanity's greatest challenge may soon be just making it to the next harvest.

Socialism failed because it couldn't tell the economic truth. Capitalism may fail because it couldn't tell the ecological truth.

One way or another, the choice will be made by our generation, but it will affect life on earth for all generations to come

Another agricultural trend of growing concern is the increased nutrient content of coastal waters resulting from fertilizer runoff in agricultural regions. Augmented by urban sewage discharge in some situations, this results in huge algal blooms, which, as they die and decay, deplete the oxygen content in the water, leading to the death of the fish.

The transition from coal, oil, and gas to wind, solar, and geothermal energy is well under way. In the old economy, energy was produced by burning something - oil, coal, or natural gas - leading to the carbon emissions that have come to define our economy. The new energy economy harnesses the energy in wind, the energy coming from the sun, and heat from within the earth itself.

Global food insecurity is increasing...the slim excess of growth in food production over population is narrowing.

The biggest threat to global stability is the potential for food crises in poor countries to cause government collapse.