New York Times
Google - Research database allows searching of the scholarly literature.
C. Freudenrich, Howstuffworks - A good summary of the light/particle nature of light.
American Institute of Physics - Light might be the result of a breaking of a fundamental symmetry relationship in special relativity.
C. Colwell, PhysicsLab Online - A concise mathemetical description of intereference and diffraction as relevant to Young's experiment.
An alphabetical glossary of relevant scientific terms.
T. Young, Philosophical Transactions - Original 1803 text of Young's presentation as published in the journal of the Royal Society.
B. Taylor, Miami U. - Experiment with constructive and destructive interference with this wave pulse addition tool.
W. Scheider - A simple guide to reproducing Thomas Young's famous experiment with light.