I'm not going to refer you to Wikipedia. Instead, I'll take the top hit off of google scholar, given the search term for "Sapir Whorf"[1]. The conclusion is in the abstract:
"""
These findings suggest that the mastery of the English subjunctive is probably quite tangential to counterfactual reasoning in Chinese. In short, the present research yielded no support for the Sapir-Whorf hypothesis.
"""
Every serious study of S-W, results in the same: no evidence.
Now, there is -minute- evidence that languages that have very short number words allows students to master the memorization of number sequences easier---the students literally have less information (in terms of phonemes) to memorize. This sort of thing is actually pretty prevalent; but it is not really what most people are thinking of when they discuss S-W.
Also, the Himba "study" about green is pretty much debunked. If you get a high-quality monitor, with good ambient lighting, go ahead and ask some colleagues to find the differently-colored green square. They'll do so, just fine, and quite quickly!
Now, there is -minute- evidence that languages that have very short number words allows students to master the memorization of number sequences easier---the students literally have less information (in terms of phonemes) to memorize. This sort of thing is actually pretty prevalent; but it is not really what most people are thinking of when they discuss S-W.
Also, the Himba "study" about green is pretty much debunked. If you get a high-quality monitor, with good ambient lighting, go ahead and ask some colleagues to find the differently-colored green square. They'll do so, just fine, and quite quickly!
[1] http://www.sciencedirect.com/science/article/pii/00100277839...