He opposed the death penalty, supported stem cell research and called intelligent design a scientific fraud.

Scientific fraud typically involves tampering with data: when your experiments don't quite work out, you alter the results to say what you want.

There's nothing new about scientific fraud.

Indeed, biases sometimes come from deliberate intent to mislead or other scientific fraud.

The blog argues that retractions provide a window into the self-correcting nature of science, and can provide insight into cases of scientific fraud.