[AnotherUnixGeek]

Or will it all be over before we even sense anything?

The CERN LHC isn't considered to be nearly large or powerful enough to create a micro black hole. If one did manage to get created, it would almost certainly disintegrate immediately. If a micro black hole somehow defied these odds, it's effect on the earth would take a relatively long time to become noticeable - long enough for all of us to realize what was happening.

But it's worth noting that particle collisions equal in power to what the LHC will achieve happen in our atmosphere regularly due to cosmic ray activity - and we're all still here.

[monkeyshine]

long enough for all of us to realize what was happening

Glad to hear it. There will be plenty of time for each of us to get in our spacecraft and move to another solar system.

[FastCoyote]

[But it’s worth noting that particle collisions equal in power to what the LHC will achieve happen in our atmosphere regularly due to cosmic ray activity - and we’re all still here. ]

Or are we??????????