• arXiv.org — Formerly known as the xxx LANL archives, now hosted at
Cornell university; the definitive source for preprints in physics
and mathematics.
• The Millennium Prize Problems — Need a quick million dollars? Solve one of these seven
problems from the Clay Mathematics Institute in Cambridge, Mass.
• The Ig Nobel Prizes — Recognizing outstanding achievements that cannot or should
not be reproduced.
Popular Physics Sites
• PhysicsWeb — Physics news, jobs, and resources. Published by the IoP.