I wish they used more specific language than the blanket term "scientists". Reproducibility is highly field-dependent. In organic chemistry, for example, the journal Organic Syntheses only publishes procedures that have been checked for reproducibility in the lab of a member of the board of directors. http://www.orgsyn.org A few years ago someone published a paper in a highly esteemed journal that was largely thought to be bunk (oxidation of alcohols by sodium hydride). A prominent blogger live-blogged his (unsuccessful) attempt to reproduce the experiment, as did others. The oxidation was in fact due to the presence of oxygen, not due to sodium hydride. The paper was retracted.