Retractions

I love this one and I expect to see more like in the future. However, the bigger problem is irreproducability in general, not fraud. There are structural causes for this problem, such as the statistical significance filter.

Mathematics is blessed from this point of view. My results can be reproduced every time someone reads them and understands the proofs. Only for a handful of famous problems are false proofs a major nuisance; even for these, the errors are found quickly.