1.   Just when did this revolution occur and in fact did information exist before its arrival in electronic form?

2.   A similar revolution has occurred in the trucking industry.

3.   A technological revolution occurred in speed skating last year, and Catriona Le May Doan and her Canadian teammates decided not to resist the inevitable.

4.   But a second revolution is occurring in the amount that advertisers can learn about the customer.

5.   But when revolution occurs there is a much clearer demarcation line between winners and losers than in an environment where things are normal.

6.   It is when rising expectations and aspirations run ahead of circumstances and opportunities that revolutions occur.

7.   Meanwhile, a revolution was occurring in northern Europe.

8.   Yet for all audio buffs, the digital revolution is occurring with dizzying speed.

9.   A similar revolution later occurred in America when the Plains Indians captured and domesticated horses brought to the New World by Spanish explorers.

10.   George Grayson, a Mexico expert at the College of William and Mary, says a revolution has occurred in the relationship.