The Proceedings of the National Academy of Sciences (usually simply referred to as PNAS) is a "scientific" journal established by the National Academy of Sciences in 1914.
Articles published in the journal are subjected to peer review. However, the sometimes-short length of said review has recently sparked criticism from Conservapedia.[1] PNAS has further been accused of ideological censorship, refusing to publish studies and other materials that challenge scientific orthodoxy.[2]
In 2008, PNAS published a paper that supports the infamous and debunked "hockey-stick" theory of climate change.[3]