1.   A Bush executive order diminishing access to presidential papers could restrict a future David McCullough or Michael Beschloss from reconstructing presidential histories.

2.   Accidents of death provide the raw material from which scientists reconstruct the history of life.

3.   Now, researchers say they have reconstructed the history of the gender genes by tracing back the mutations that make the X chromosome different from the Y chromosome.

4.   The new research suggests that scientists may be able to use this data to help reconstruct the history of past climate fluctuations.

5.   The mutations are particularly helpful for reconstructing population history because each lineage of men has its own distinctive pattern of mutations.

6.   The sites are believed to include records to which the United Nations would like to gain access to reconstruct the history of the Iraqi program.

7.   With that case as foundation, the film reconstructs the history of gay rights and profiles leaders like Bayard Rustin.