While the emphasis on teaching to higher, test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools, high schools for a variety of reasons seemed to have made little progress.

In fact, their moods turned significantly darker than those of members of the control group, who weren't urged to think positive thoughts.

Land Usage: Over the last five decades, improved farming techniques and technologies have helped to significantly increase crop yields along with a 12% expansion of farmed land use.

My idea would be to combine that with careful oversight, a strong organizational culture, and make sure the goals that you use are going to be constructive and not significantly harm the organization," Schweitzer says.

A simple consumption tax of, say, 5% would significantly reduce the country's huge government deficit without damaging productivity