6 per- cent per year. Researchers at MIT calculate that "the aver-age person would have to take a flight every day for the next 29,000 years before being in- volved in a fatal crash."
True, the authors say, re- ports of "near collisions" have jumped recently (up 26 per- cent between 1986 and 1987).

"Religious Change In America."
Harvard Univ. Press, Cambridge, Mass. 02138. 133 pp. $25.
Author: Andrew M. Greeley
"When the Social Science Re- search Council i...