This proves too short for even the most highly industrialized countries to switch their economies to alternative energy sources.

France and other European countries switched to Doppler network by the end of the 1990s to early 2000s.

Last weekend, most European countries switched to daylight saving time, moving their clocks forward one hour.

France and other European countries had switched to Doppler networks by the early 2000s.

"In the spring, when the northern potatoes run out and the whole country switches to California long whites, you can taste the difference."

Minor countries may still switch sides by diplomatic roll, as Rumania did in 1944.

The entire country will switch to digital by 2012.

If that were to change, he said, even Muslim countries would quickly switch back.

The country switched to other crops, but their aquifers are predicted to be empty within 25-30 years.

Given the financial benefit it is expected that more countries will switch to a register census model.