Recent results from an experiment measuring the speed of neutrinos implies that they travel very very slightly above the speed of light. This has caused considerable excitement and some consternation in the scientific world. The physicists responsible are asking others to examine their results. See this BBC report and this Physics World report.
There are many aspects of this worth looking at:
- why is the speed of light considered a universal speed limit?
- what are neutrinos? See these articles.
- what experiment were they doing? They did not set out to test this principle.
- this episode shows how science should be conducted