It's a very good relevant XKCD.

The title text is more directly applicable: If you ask "why are leaves green?" the usual answer is "because they're full of chlorophyll, and chlorophyll is green," even though "why does chlorophyll scatter green light?" is a great question too.

"Don't breathe air, it has sharks in it! BLUE HAS SHARKS IN IT!" -The funny purple man

But it's an incomplete answer.

"air is invisible at short distances, blue at longer distances, and takes on red green and orange at sunset" would be better

Better question: "Why is the sky usually blue but sometimes red?"

Talking specifically about sunsets, not apocalyptic wildfire smoke

https://theonion.com/after-obama-victory-shrieking-white-hot-sphere-of-pure-1819595330/

It was also a great pun for the topic being discussed.

The reason the sun appears to be yellow is the same reason that the sky appears to be blue.

Blue light is scattered more by the air in the atmosphere than other wavelengths. Remove blue from white light and you get yellow. So the light coming from the sun that isn't scattered and dispersed through the sky (making the sky look blue) is yellow.

Neither water is blue

They take us for absolute fools

That's why I never developed super powers.

with a slight bias towards green

And it's my understanding THATS why plants are green

That's from plants that get their air mostly from the shade and sunsets, so obviously they'd be less yellow and more dark and red.

There's also an extremely tiny percent of plants that are entirely white, they don't get their energy through photosynthesis but instead a parasitic relationship of fungi and other plants.

As is purple rain.

The thing is it's kinda right, just lacking detail

Blue waves fast Red waves slow

Easy as

My guess would be that plants optimize also for absorbing a significant amount of the light they receive from the blue sky, so they still get some when direct sunlight isn't available.

Mix blue and yellow paint and you end up with green paint.

Air is light blue because it filters out red, which is why chlorophyl has optimized for the mix of the remaining wavelengths yellow and blue, which is green. Color theory of additive blending.

(Our sun is slightly yellow, which is why the sky isn't cyan and why alot of tropical plants are darker green close to brown/red)

Lemme guess, reddit transplant?