humans have always lived with the threat of armageddon just around the corner (whether perceived or not)
....catastrophic climate change,
....a supervolcano eruption....
.....asteroid, meteroite stike.....
.....global pandemic.....
.....massive solar flares....
.....all these threats are real and will happen someday...we've just been lucky so far.....
I guess you could add nuclear fallout and a pollution of natural resources as new ones we've created in the last 100 years or so - as well as increasing the odds of a global pandemic and for catastrophic climate change....
but the fact remains the whole of mankind could be wiped out tomorrow - one errant rock from space and booom! thankyou and good night. As a species we really havent been around that long, and extinctions happen all the time, so there's no reason to expect that it couldnt happen....
all we can do is keep inventing, keep creating new technologies, keep doing scientific research...and keep trying to control our natural environment as best we can....oh yeah, and keep our fingers crossed :thumbsup: