Archive for May 6th, 2009

37,000 Year Old Baby Mammoth

06/05/2009

Secrets of 37,000 year old baby mammoth revealed
By Paul RinconBBC

Baby Mammoth

Baby Mammoth

Perfectly preserved, the baby mammoth looks like she has been asleep only for a moment – not for the 37,000 years she has spent locked in the rock hard permafrost of the Arctic tundra.

Clumps of brown hair still cling to the three foot tall body, hinting at the coarse coat that would have once covered the infant. Even her eylasahes are intact.
These extraordinary images show why scientists are so excited by the discovery of Lyuba – the most complete body of a woolly mammoth ever found

Area where Mammoth was Found

Area where Mammoth was Found

Discovered at the side of a river by reindeer herders on the Yamal Peninsula in northwest Siberia, the bone month old female is helping scientists to unravel how the extinct ice age giants once lived.

The contents of her stomach have provided scientists with valuable clues about what she and her fellow mammoths ate.

The baby’s layers of fat and minerals in her teeth have provided an unprecedented insight into her health and the health of her herd.

Palaeontologists now believe the information they have gleaned from the remains can help them understand what led to the woolly mammoths’ ultimate extinction around 10,000 years ago.

Mammoth Mummy

Mammoth Mummy

It is thought that mammoths died out as they were unable to adapt to the changing world around them as temperatures soared at the end of the last ice age, although some experts believe they may have been hunted to extinction by humans.

The findings have shown that the baby mammoth was in good health and well fed before its death, suggesting that its herd was able to find plenty of food at the time it was alive.

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New Zealand’s glaciers

06/05/2009

New Zealand glacier findings upset climate theory

Mt. Brewster Glacier, Image:R.Richards

Mt. Brewster Glacier, Image:R.Richards

Research by three New Zealand scientists may have solved the mystery of why glaciers behave differently in the Northern and Southern Hemispheres. Geologist David Barrell of GNS Science, Victoria University geomorphologist Andrew Mackintosh and glaciologist Trevor Chinn of the Alpine and Polar Processes Consultancy have helped provide definitive dating for changes in glacier behaviour. They were part of a team of nine scientists, led by Joerg Schaefer of the Lamont-Doherty Earth Observatory at Columbia University in New York, who used an isotope-dating technique to get very precise ages for glacial deposits near Mt Cook.

Mt. Brewster, glacier's tongue

Mt. Brewster, glacier's tongue

They measured the build-up of beryllium-10 isotopes in surface rocks bombarded by cosmic rays to pinpoint dates when glaciers in the Southern Alps started to recede. The technology is expected to be widely applied to precisely date other glaciers around the world. Glaciers are sensitive indicators of climate changes, usually advancing when it cools and retreating when it warms. The first direct confirmation of differences in glacier behaviour between the (more…)