Expert Forecasts for 2020

• The technological preeminence of the scientifically advanced countries in North America, Western Europe, and Asia • Improve public health. • Reduce the use of resources and improve environmental health. Improving public health is often another leading goal. Because people in many of these countries frequently lack clean water and good sanitation, waterborne diseases are common and generally spread easily. The largely rural populations usually have little access to health care. In nations where cities are growing and people are traveling more frequently both domes-tically and abroad, the threat of epidemics can increase. In South Africa, for example, AIDS Over the next 15 years, certain countries will possess vastly different S&T capacities. They will also vary considerably in the institutional, human, and physical capacity required to develop drivers for implementing technology applications and overcome barriers. Consequently, the global technology revolution will play out quite differently among nations.