1.   The extent of the depletion took scientists by surprise.

2.   We took a scientist along to find out.

3.   At other times, the report says, scientists would be taken on sightseeing tours while their hotel rooms were burglarized.

4.   Opponents of stem cell research worry that it will inevitably take scientists down a path of creating entirely new human beings.

5.   The appearance of this rare brain disease in so many people in just four years has taken scientists by surprise.

6.   The finding also takes scientists a little closer in their quest to understand the genetic component of obesity, Mitchell said.

7.   The machine could do in a few weeks what took scientists peering through microscopes more than a year to do.

8.   The problem with the genome is that when it moved from the second category to the third, it took the scientists in the public project by surprise.

9.   The Viking pictures, by contrast, showed a bright, salmon-pink sky that initially took the scientists by surprise.