I think the chance that a black hole created at CERN can consume the planet is as likely as me winning the lottery 10 times in a row. Possible but atrociously improbable.
I would of course be quite mad to win a gazillion billion dollars only to fall into a singularity while a happy observer from far away watches as I red-shift to infinity towards the event horizon.
In any case even if Black Hole would actually be produced, they would be of subatomic dimension, and since the subatomic world is a world where there is relatively a lot of empty space (maybe we should ask Rick Moranis to shrink us so we can see...), the chance of a tiny weenie black hole coming in contact with something before it evaporated. Yes even Black Holes have a 'boiling point'. Of course, if some of you nerds have read books by our favorite ALS-suffering scientist Stephen Hawking, you already know this. Naturally he could be wrong, and he actually was proven wrong about some theories on information loss in black holes recently.
In any case do not worry. If it happens it'll be quick. Have a nice day.
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"some scientists claim living a healthy life to 1,000 is possible"
As a scientist myself I know that scientists often make nice promises like the one stated above. Sometimes we get some tiny and yet very fascinating results in our research. Then our imagination festers and we start making science fiction in our heads. Unfortunately when we have to put theory into practice we often smack our faces into very high brick walls.
We can make an example that touches the environment, energy and fuel crises. They have been promising us Nuclear Fusion as an energy source for the past 50 years and now the prospectives in such regard are that we will have Nuclear Fusion replacing fossil fuels in power plants in 50 years from now. I am talking about 'hot' fusion. Cold fusion, it seems, is a possibility that has been dropped altogether.
So 'Some scientists' say a lot of things, but often they have no more value than the gibberish uttered by Geordy LaForge on the Enterprise.