and declared that dolphin-safe labeling may not be used for tuna caught with purse-seine nets. Id. [1] In this appeal, the government challenges each of the three legal grounds on which Judge Henderson granted summary judgment for Earth Island. The government’s principal contention is that the' district court erred in not deferring to agency expertise in the methodology of the agency’s studies. We conclude, however, that no deference to agency discretion as to methodology is appropriate when the agency ignores its own statistical methodology. In addition, because most of the data the government relied upon was inconclusive, the district court correctly held that the Final Finding was not rationally connected to the best available scientific evidence. See Brower II, 257 F.3d at 1070 (<HOLDING>). We also agree with the district court that
holding evidence insufficient to support finding of implied contract holding that a failure to corroborate ones testimony with supporting evidence cannot form the sole basis for an adverse credibility determination holding that speculation and conjecture cannot support an adverse credibility finding holding that the agency cannot use insufficient evidence as a basis for finding no adverse impact recognizing that omissions of details may be an insufficient basis for upholding an adverse credibility finding