"Science (from the Latin word scientia)...is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe." [wiki]

No mention of "facts" there. That's because facts, if they are true, are true. Science is the pursuit of truth but there are no stepping stones, aka facts, along the way. "Systematic enterprise" refers to the scientific method. One of the tenets thereof is that there can be no certainty, and no "proofs." As for consensus, of course there can be consensus among scientists. There is consensus about anthropogenic climate change and there is consensus about evolution. But consensus doesn't equal truth. Consensus doesn't equal certainty. But consensus does provide us with that working knowledge that allows us to move forward. If you deny that we can move forward because there's no "proof," etc, then let's say that you belong to the Nigel Lawson school of science. Which, basically, is not science at all. There's at least one subscriber to that here.