More than a third of US scientists, in a survey of thousands, have admitted to misbehaving in the past three years. Less than 1.5% admitted to falsification or plagiarism, but 15.5% said they had changed the design, methodology or results of a study in response to pressure from a funding source; 12.5% admitted overlooking others' use of flawed data. These results of an anonymous survey have been published in the latest edition of Nature.</p><p><a href="http://www.nature.com/nature/journal/v435/n7043/full/435718b.html">Nature: One in three scientists confesses to having sinned</a>