. . . funded by a $500 million, 10-year grant from BP

How convenient for BP.  Now, how did that research come to be?

"The research was supported by an existing grant with the Energy Biosciences Institute, a partnership led by the University of California, Berkeley and the University of Illinois that is funded by a $500 million, 10-year grant from BP."

Need I say more?

From Wiki:

"The terms funding bias, sponsorship bias, funding outcome bias, or funding publication bias refer to an observed tendency of the conclusion of a scientific research study to support the interests of the study's financial sponsor. This phenomenon is recognized sufficiently that researchers undertake studies to examine bias in past published studies."

For example:

"The US Food and Drug Administration (FDA) determined in 2008 that the bisphenol A (BPA) in plastic containers is safe when leeched into food, citing chemical industry studies. Independent research studies reached different conclusions, with over 90 percent of them finding health effects from low doses of BPA."