Does rice milk or milk from grain-fed cows emit less methane?

[FlatAssembler]

What do you mean science was without it?

I mean that the Mesopotamians, Babylonians, Chinese, Egyptians, and various Paleolithic people were able to conduct scientific investigations without a peer review process. Peer review in the modern sense only dates from about the 17th century (although if we stretch the definition a bit, a case could be made for the 9th).

Boru

I don't know what scientific investigations you think occurred at the time of ancient Mesapotamia or Babylon or Egypt, much less in Paleolithic. My point is that scientists have always communicated with other scientists, and have always asked other scientists what they think (to check for obvious errors) before publishing their results.