PEACE
Rigoberta Menchu, 33, Guatemalan Indian-rights activist whose family was killed in her country's bloody civil war; from Mexico, where she fled in 1981, Menchu has fought against persecution by rightist forces of tens of thousands of Indians. She "stands out as a vivid symbol of peace and reconciliation across ethnic, cultural and social dividing lines," said the citation. (See related story on page 61.)
CHEMISTRY
Rudolph Marcus, 69, Canadian-born researcher at the California Institute of Technology; his theoretical work, done mostly in the 1950s and '60s, describes how and why chemical reactions differ in the speed at which they proceed,...