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1-in-1,000 Chance of Asteroid Impact In ... 2182?
astroengine writes "Sure, we're looking 172 years into the future, but an international collaboration of scientists have developed two mathematical models to help predict when a potentially hazardous asteroid (or PHA) may hit us, not in this century, but the next. The rationale is that to stand any hope in deflecting a civilization-ending or extinction-level impact, we need as much time as possible to deal with the threatening space rock. (Asteroid deflection can be a time-consuming venture, after all.) Enter '(101955) 1999 RQ36' — an Apollo class, Earth-crossing, 500 meter-wide space rock. The prediction is that 1999 RQ36 has a 1-in-1,000 chance of hitting us in the future, and according to one of the study's scientists, María Eugenia Sansaturio, half of those odds fall squarely on the year 2182."
We cannot predict the course of asteroids over 200 years to within an Earth diameter. I have worked on this area, and the masses and positions of bodies (particularly all of the other asteroids) are simply not well enough known. So, it will come near the Earth, but we won't know if it is a true threat for at least a century.
Not only you. The whole human species would be extinct by then. We have global warming, pollution, fuel shortage, wars, corruption. These are enough to finish us by 2100. What happens in 2182 is irrelevant.
Not really. The human race started off as a primitive ape like species. We managed to survive living in jungles, deserts and caves. How is "global warming, pollution, fuel shortage, wars, corruption" going to kill ~7bn people. Sure it might kill 3 billion or even 4 billion at the very worst (which is still unlikely) But there is no way any of the things you mentioned will kill every single human being.
Freezing is not the problem, thawing is. Also, do these cryoprotectants work on cell level so the walls aren't punctured by ice crystals?
Yes, they do. This problem was solved for in the late 90s by using much more advance cryoprotectants which allow the body to vitrify at low temperatures rather than freeze. This has been true for about a decade now. Indeed, they've now successfully brought rabbit kidneys down to liquid nitrogen temperatures and brought back up, transplanted them, and had the kidneys function. See http://www.cryonics.org/reports/Scientific_Justification.pdf which includes discussion of this and other research (including direct examination of vitrified rat brains which show the cellular and synaptic structure largely intact.)