Negative science – Often the "eureka moment" occurs not in the sense of "I've found it", but more as a "WTF?" Indeed, it's been estimated that more than two-thirds of scientific experiments fail to produce the results anticipated and in one way might be considered failed experiments, or negative results.
But, such results are not worthless, they are critical to progress as they contain a high level of knowledge despite appearances. Unfortunately, in the climate of scientific publishing in peer-reviewed journals, such knowledge is mostly lost. The All Results Journals hope to recover negative results and reveal the valuable pieces of information in science from so-called "failed" experiments. Browse the journals here.