Archive for May, 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…)

World Health Organization Travel Advice

02/05/2009

1st May 2009

Is it safe to travel?

WHO is not recommending travel restrictions related to the outbreak of the influenza A(H1N1) virus. Today, international travel moves rapidly, with large numbers of individuals visiting various parts the world. Limiting travel and imposing travel restrictions would have very little effect on stopping the virus from spreading, but would be highly disruptive to the global community.

Influenza A(H1N1) has already been confirmed in many parts of the world. The focus now is on minimizing the impact of the virus through the rapid identification of cases and providing patients with appropriate medical care, rather than on stopping its spread internationally. Furthermore, although identifying the signs and symptoms of influenza in travellers can be an effective monitoring technique, it is not effective in reducing the spread of influenza as the virus can be transmitted from person to person before the onset of symptoms. Scientific research based on mathematical modelling indicates that restricting travel will be of limited or no benefit in stopping the spread of disease.

Historical records of previous influenza pandemics, as well as experience with SARS, have validated this point.

Travellers can protect themselves and others by following simple recommendations related to travel aimed at preventing the spread of infection. Individuals who are ill should delay travel plans and returning travellers who fall ill should seek appropriate medical care. These recommendations are prudent measures which can limit the spread of many communicable diseases and not only Influenza A(H1N1).