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Mass Extinction: Life On the Brink DVD
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Item No.: MEXT601
Single DVD

It's a mystery on a global scale: five times in Earth's past, life has been nearly extinguished, the vast majority of plants and animals annihilated in a geologic instant. What triggered these dramatic events? And what might they tell us about the fate of our world? MASS EXTINCTION: LIFE AT THE BRINK joins scientists around the globe as they unravel the mysteries of two of the most dramatic mass extinction.
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REVIEW SNAPSHOT®

by PowerReviews
PBSMass Extinction: Life On the Brink DVD
 
3.7

(based on 3 reviews)

Ratings Distribution

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    (2)

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Reviewed by 3 customers

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5.0

The miracle of Universal Life

By SrSue

from Chicago, IL

Verified Reviewer

Comments about PBS Mass Extinction: Life On the Brink DVD:

This DVD made it quite clear that life is really fleeting. Where we are now has taken billions of years to form and modern humans only hundreds of thousands of years. Each decade of our life is not even measurable in the universal story. But out fleeting existence as it is can vanish in a millisecond, due to our short activity on the Earth. This dvd puts everything in perspective.

(4 of 17 customers found this review helpful)

 
1.0

Disappointing

By Consumer

from Central Coast, CA

Verified Reviewer

Comments about PBS Mass Extinction: Life On the Brink DVD:

This starts out telling you there have been six mass extinctions and then proceeds to examine two of them (Permian Great Dying and Cretaceous/Tertiary), but doesn't bother to even name the others or give any idea of the timing of them. The examination of the two chosen is pretty superficial. That's because there is a third part to the story the makers want to convey: That the next Mass Extinction is now and it's because of human additions of CO2 to the atmosphere which is causing Climate Change.
This is dealt with superficially also: the ravaging of the tree lines due to beetle infestation is one of the major proofs offered. No discussion of any contrary opinion (for example: that CO2 may not have much at all to do with temperature increase and humans can't possibly add enough gases to cause warming). Oh, and 95% of scientists agree etc. Of course they never discuss that the 95% figure is based upon a study of manuscripts offered for publication, of which, one third of the scientists who accepted climate change had 95% agreement that it was happening! That's 95% of 33 1/3%.
I'm just a layman, but I remember the Time Magazine Cover story in the 1970's of the coming Little Ice Age because of the trend of COOLING temperatures for the prior three decades. What happened with that? Where is that data? And, it now appears that the temperature data is "interpreted" before being entered, so we're not getting the raw data after all.
To use science for political gain is unforgiveable. To use science for political correctness gain is beyond disturbing. However, PBS does receive government money and the popular idea now is man-made global warming, the research of which starts with the conclusion that it is occurring and no funding if the project isn't in conformity. To disguise a political propaganda piece as scientific is just beneath even a government funded entity ... isn't it?

(8 of 10 customers found this review helpful)

 
5.0

Mass Extinction

By Rene

from New Jersey

Comments about PBS Mass Extinction: Life On the Brink DVD:

This is a fascinating presentation that focusses on two of the five planet-wide extinctions and also on their relevance to us and our civilization today. It first goes over the most recent, the asteroid impact that killed off the dinosaurs and much of other life about 65 million years ago. Next it discusses the greatest extinction, the Permian extinction about 251 million years ago, caused by vast eruptions in Siberia. Finally, the program details the current status of the present day world and how danger signs are appearing, much of which may be caused by human use and abuse of the planet through burning fossil fuels and releasing various substances into the ecosystem.

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