This website has very much information under a variety of item headings and seeming a lot of interpretation of the Mayan calender.
http://www.diagnosis2012.co.uk/items.htmUnder the remote viewing heading itsuggests that "end date" is not really a Gregorian understanding since time is fluid and exists in a variety of parameters.
Other parts of the site suggest the end date to be an explosion of understanding, perhaps in a way of light years not being travelled but space reached instantly through astral projection, the physical limitations overcome by higher spiritual and philosophical understanding.
In 'asteroid takes out the earth scenario', population explosion is explained in a book on reincarnation, more souls attempting to take short or longer revision lessons in preparation for this event. However some of this is postulated as forces of fear and depression also trying to overcome the higher spirit by taking physical bodies in the angelic type war.
I do not doubt that an escalation of ectopic pregnancies, miscarriages or other impacts could seriously cause a loss of joy and celebration of life and creation or disrupt the harmony of the Universe.
Somewhere on diagnosis 2012 I read that in he case of 'end of world' type scenario, those ready for higher learning would continue with that, those not ready would be reincarnated on a planet capable of providing the atmospheric conditions for human life, and they would continue to spiritually evolve until able to join those who had gone ahead.
World without end, Amen.