[Resettozero]

Pre-deluvian. The atmosphere was more oxygen rich. Less ultraviolet rays penetrated due to atmospheric water vapor. People lived much longer lives then.

I believe this is true.

If leading scientists were willing to test these propositions you listed, more scientists would likely find the truth of these matters, as opposed to merely extending the various popular narratives that keep their research funded but keep themselves and other human beings in the dark as to what has really happened in the past and when.

[SkyPilot]

I do as well. We also know that carbon dioxide is 1.4 times as heavy as oxygen of a similar volume. The atmosphere in the pre-deluvian times was much lighter and more oxygen rich, permitting much greater growth of plant and animal life. It also permitted more rapid movement. It also permitted extraordinary creatures to survive when today we know their lung capacity could not sustain them. That, combined with the water vapor filtering out so the ultra violet rays, and people lived extraordinarily long lifespans as told in the Bible.