Soil mapping is one of the pillars to the challenge of sustainable development

Russia has gone through eight years of continuing economic pain.

Tax the rich. End the wars. Break the power of lobbies in Washington. These are the demands of Occupy Wall Street. They are very important. The US corporations dominate Washington. The big oil companies, Wall Street banks and the military-industrial complex - they rule this country and their influence and power has to be broken.

If we did go into a recession, something that's always possible for the U.S. or Europe, we could lower interest rates and expand the money supply without worrying about the price of gold.

The defining challenge of the 21st century will be to face the reality that humanity shares a common fate on a crowded planet.

If you have a lot of short-term debt, it means that all of that money can be demanded in a very short period of time. Technically, short-term debt means money that's coming due within a year. Typically, it means money that's coming due within 30 to 90 days.

The essence of Africa's crises is fundamentally it's extreme poverty.