Archaeologica.org

The 'Toba' bottleneck is derived from DNA studies - not carbon dating. Thanks for the clarification, Andy. BTW, did you develop this site: Ukweatherworld. I'm a weather enthusiast. 8) I co-own it :) I shall expect to see you posting there soon! We have a good mix of professionals, knowledgeable ama...

So how come the geneticists claim the 'bottleneck' occured 60,000 years earlier because of the Toba eruption? Good question. If an impact like the one we're discussing set the Northern Hemisphere on fire, would that increase 12C levels. If so, then any 14C/12C ratios would indicate a date greater t...

LaViolette's theory is interesting and I can't comment on the 'superwave' elements of it, but the geological evidence he uses to support his contention is at time rather flawed. For example, he uses evidence of forest fires having raged in various parts of the world c11,500 years ago (or whatever da...

Isostatic rebound is still happening in the northern British Isles. So little now that it's barely detectable. Yes, though as Scotland continues to rise (I shall be off exploring raised beached etc on my holiday later this year, btw) so the south is sinking - hence the increased flood threat for Lo...

I'd say that actually it's mush too complex a phenomena to have one simple cause

We'll get there eventually though .....

Digit wrote: My fear is that we do it and the climate takes a downturn as well due to natural causes, then what?

We get a decent winter at last

Don't make the mistake of thinking I'm of the opinion that GW isn't occuring, it is, of that I have no doubt. The cause is my concern. We're probably not that far apart actually - I just think that carbon emissions are likely to be a contributory factor. But definitely not the be all and end all th...

Today's newspapers are full of stories of trees blossoming early due to the very mild winter and start to March ..... next Tuesday's will be full of blizzards sweeping the country and possibly the most widespread snowfall of the winter!

How do you make future predictions for something you don't know the cause of? Easy. If you believe the cause is simply one of increased atmospheric CO2 and subsequent feedbacks ;) Of course, if it's not then your predictions may go somewhat awry! btw not sure where in Wales you are Digit - but you ...

Researcher on climate IMPACT Essan, that means he/she studies results. I think we all know the results of GW, what we have been discussing is its cause. Certainly the UN should be considering its impact, but not dressing up the names as being researchers in its cause. That is plain deception! Try t...

From what I hear, much of the current climate research is into areas other than carbon emissions. But that's because the issue has been deemed settled: CO2 is rising because of human activity and it does produce an increase in global temps. The extend of future change remains uncertain, more so when...

Monk, It is completely logical to assume that even nomadic tribes would have been exposed to the ideology of the major powers in the area and been influenced by it. And wanted to legitimise themselves by producing an original myth that gave them an important and ancient pedigree. Just like the Saxo...

It's definitely become a political issue :( But there is still a scientific element to it. Although in my opinion the real concerns are regrading the numerous other ways in which human activities affect regional climates other than carbon emissions. As for modelling - there my concern is that the mo...

It's near certain that increases in atmospheric CO2 are down to human activity and the science says that for a doubling of CO2 we should see a 1c temp rise. Yes and the model which predicts this is in error. The present exponential Co2 rise has resulted in about 1/2c temp. rise. It's not a model, i...

Equally Essan a few years ago we had more 'experts' on AIDs than sufferers, show people grant money and they will take it. If these climatologists had 'Proof' I would prefer them to come forward with it rather than have to check the qualifications of those who are doing the shouting for them. Okay ...