The Kids’ Reading Room

* Edward Luttwak argues that it is somehow irrational to oppose the use of depleted uranium in ammunition (“Radiation-Sickness Scare Ignores Scientific Facts,” Commentary, Jan. 16).

While the radiation danger from intact DU is apparently small, the danger from pulverized DU--the result of a hit by the ammunition on a hard target--may not be. This is not ignorance but caution, seemingly rare these days.

PAUL R. COOLEY

Culver City