And those two are different from each other. It’s still the case that a wide variety of species seem to have evolved this way. I’m not saying our skin has the same tolerance - that seems unlikely. But I do think we benefit greatly from some level of sun exposure, ideally more than most people get today.

I agree we benefit from sun exposure, what I don't agree with is a lot of the anti-science BS I'm seeing in this thread.

1. No, tanning isn't good. We've known that for a long, long time. Remember tanning beds? Why don't people do that anymore?

2. Yes, you DO produce vitamin D while wearing sunscreen

3. Yes, you DO get mental health benefits from being in the sun with sunscreen

4. No, sunscreen DOES NOT cause cancer

These aren't even opinions. These people just don't know anything about anything, which is fine, but then they talk like they have it all figured out. Because their wrinkly granny survived the sun or something.

Can we stop with blatant misinformation? Why is this still such a problem on the internet and why is it a problem on hacker news?