Life Extinguishing events

This more of a debate topic--but 4 now i m posting it here at level zero

What are Life Extinguishing Events??Explain.

There are many

but in my humble opinion(i am no match with u)most important is dilation of pupils(or whatever)

P.S:if i am understanding the question right

skand first tell me the meaning of p.s........

anyone else cn also tell

even i am meddled up with the question
of course i do have some hint but i am, not totally sure

PS -is plz see (perhaps)

life extinguishing events mean an event that can eliminate all life from earth.
now give an example and tell weather this is possible?

large hadron collider
ha ha ha ha !

no,P.S means Post Script
from letter-writing days
Just timepass

o,I thought events that are surity that one has died

LHC won't do


a good example is volcanic erruption (major) or meteorite...

cmon u know it will transform the earth in a black hole.................

yup........asteroids............they r supposed to extinguished the dino's..........

scientists say that these asteroids may attack d earth and extinguish us like a fire extinguisher...........as they did to dino's

they had devised a method to decrease the chances...........
do u kno that.......?????

i wish this has som probablty in kvpy..........i kno a lot abt this.........

could u explain that method?

they do wid the help ov lasers........

can't they burn the asteroids with lasers???

no i think they cant neglect the cosmopolitan material since it is directly proportional to the velocity by an in coming source,also the drakes case will then be unstaisfied.