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I heard a radio-net program that has bearing on this. Apparently they are using biolumenescence to date these tools.

It has been demonstrated elsewhere that biolum can only give a MAXIMUM age. That is, the tools cannot be any OLDER than 70K. It does not mean they are 70K.

For example, a find in Austraila recently shocked the world with a biolum date of 60K years old. New data (they found a way to carbon date this find) now supports a date of from 1-3K years.

Biolum ASSUMES that the right crystals were "fully charged" with sunlight at the time of burial. Note that these discoveries were in a CAVE. It is highly doubtful that the biolum cyrstals were fully charged as they were not exposed to direct sunlight. Hence this would show more "fading light" than has actually occured.

Unless they use more than biolumenescence to date them, I'd be willing to bet these tools are NOT 70K old.

I'm sorry. I've been trying to find anything possible on bioluminescent dating, and I'm coming up with zilch. Prior to this article, I'd never even heard of it. Do you have a website or other reference on this type of dating? I find that discussing the pros and cons of various dating methods to be more enjoyable when both sides have an understanding of what is being discussed.