1.   Currently, there is no effective way to determine the age of someone who is accessing an Internet bulletin board or a site on the World Wide Web.

2.   Dr. Freedman may be close to determining the age of the universe.

3.   How was their age determined?

4.   Huang needed a Western collaborator to determine the age of the fossil and present it to the world, he said.

5.   In her lab at the museum, Dr. Roosevelt is surrounded by reports of specialists brought in to examine the cave materials and determine their ages.

6.   Knowing that rate is the important first step in determining the age of the universe.

7.   Other investigators had previously determined the age of the rocks by analyzing the rates at which their radioactive elements decay.

8.   Police have not determined the age of the weapon.

9.   Scientists can determine the age of whales by examining their ear bones.

10.   Such data, in turn, determined the age of terrestrial and celestial rocks.