The OPERA experiments observed that neutrinos are travelling at a speed higher than that of light in vacuum. The scientists were by humble to state the result in a very polite way and calling for further independent studies to confirm their observations.
The original paper and the first seminar video are in public domain for free access. It will be interesting to follow this scientific discovery process to understand how scientific research proceeds in such important issues.
Links to various articles and comments are available in an article on Knol.
Particles travelling at speed higher than light - Observation - 2011