Plenty of knowen hazardess things i think- natural events that could if not distroy mankind outright at least make life very diffacult for those who survived.
The big volcano down the road a ways from me could go off-( that worrys/worryed my daughter a bit i know- at least after she watched the movie( still there in the back of her mind tho i know to)
Am i worryed about what some call the end days,that volcano going off - winters being milder more drought- that things might warm up some more- no not to much- if it happens- it happens.
Conditions will never be perfect for everyone everywhere & they never where as others have pointed out.(man marchs on)
And Like earthquakes , tsunamis, tornados,floods , tropical storms, winter storms etc.That some plan for or should anyways these nature events as they have happened before & will likey happen again & be as prepared as possible for there effects on there lifes - And they should do the same with any global warming & its effects also.
I am inclined to believe mankind will adapt & survive this to & life will go on for a long long time after im dead&gone.I am a optamistic pessamist.
But I could build whole vast underground citys of semimole ppls- with aquatic hydro gardens & swiimng pools(with fish& mammels,birds to eat) etc all on the few 40acres of highground we have -even under very severe surface conditions . ( much cheaper construction costs& upkeep comepared to biosphere like antfarms)
All i need is water , energy ^& materials- donatons etc will be excepted including from big pockets uncle samy( just give me some of my moneys back) @
But now no one has to worry much- WE have O bamy watching over us