Greatest Threat to Mankind!?

[Mr Somewhere]

Going to have to go with the cliche cynical stupidity answer.
So, really, ourselves. People scare me sometimes.

 

[cthulhumythos]

Honestly, my biggest fear is Betelgeuse...

No, not the movie! The star! It's about to explode (or rather, it already has we just haven't seen it yet). When it does, scientists speculate it's going to be so big that even though it's like 900 light years away or something, it's going to look as big as the sun in the sky. And it's going to be that big for about 2 weeks.

That worries me! The nuclear radiation, the intense heat... Either one of those things could potentially pose a great threat to the planet. Even if it was only half of amount of heat and radiation that we get from our sun, that's going to have a massive impact on our world.

Spoiler

Except imagine it happening to a star that's like a billion times bigger than our sun.

so that's gonna happen in 900 years? i can live with that.

OT: i'm going to say not ourselves, but cthulhu.

 

[similar.squirrel]

Mankind itself. Word on the street is that we could trigger the kind of mass extinction that almost wiped out terrestrial life when cyanobacteria filled the atmosphere with oxygen.

 

[Stammer]

so that's gonna happen in 900 years? i can live with that.

Actually, scientists speculate it could happen any time between now and within a couple hundred years. Chances are it's already happened. We just haven't seen or felt it happen yet. Even if our own sun exploded it would take just over 8 minutes for us to know it (assuming gravity also works at light-speed).

 

[Twad]

Life will be end of us, it always leads humanity to death!

 

[Zyxzy]

Hmmm, either meteors, supervolcanoes, pandemics, or overtaxing of the earth.

 

[Draconalis]

Apathy and self interest.

 

[GeneWard]

Nookaler wepins

 

[monkey_man]

Mankind is the greatest threat to mankind.

I was going to say that! Ninja's be stealing mah thoughts!

[or owls ->cookies for reference]