wonder

1 - As digital technology dominates the lives of young people more and more, scientists have begun to wonder: Is the Internet good or bad for kids?

2 - The appearance of fossils in rock has been a source of wonder and fascination to man for centuries.

3 - People sometimes wonder if the eating of liver too frequently can cause vitamin A toxicity.

4 - Carbon nanotubes have been hailed as a semiconducting wonder ingredient that will make materials stronger.

5 - Many in the health profession wonder if there is really an increase in the number of food borne illnesses.