The sky has gone yellow above parts of the UK, and this is alarming some people.
It's even showing up in the background on BBC News, which obviously is when people really start to worry.
And it sort of feels like an ~obvious metaphor~.
Is it the End of Days?
Another bloody PR stunt?
Or is it what it looks like?
Are we all going to DIE?
No. It's not a harbinger of immediate doom.
Or at least, not today, probably, unless Trump. BuzzFeed News phoned up the Met Office to confirm that we weren't all about to face the final judgment, and the Met Office said "probably not".
Instead, it's dust in the atmosphere kicked up by ex-hurricane Ophelia, along with smoke from wildfires on the Iberian peninsula.
The smoke and dust has been brought here by the same strong southerly winds that have made the last few days a bit warmer than you'd usually expect.
The dust and smoke particles scatter blue light more than red light, in the same way as at sunset and sunrise. So the light that reaches us appears redder than usual (and since there's less of it, it is darker).
Also, while the Californian wildfires have been a major public health hazard because of the smoke particulates in the air, that isn't the case here.
According to the Met Office, it's all higher up in the atmosphere, so shouldn't be a problem from your lungs' point of view.
Of course, if you DO want it to be a harbinger of doom, you could point out that the wildfires and hurricanes are supposed to get more common as the climate warms up.
I'm sure it'll all be fine.
Tom Chivers is a science writer for BuzzFeed and is based in London.
Contact Tom Chivers at firstname.lastname@example.org.
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