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Latest Permafrost Stories

2012-04-24 22:27:28

Permafrost zones extend over 50% of Canada's land area. Warming or thawing of permafrost due to climate change could significantly impact existing infrastructure and future development in Canada's north. Researchers Jennifer Throop and Antoni Lewkowicz at the University of Ottawa, along with Sharon Smith with the Geological Survey of Canada, have published a new study, part of an upcoming special issue of the Canadian Journal of Earth Sciences (CJES), that provides one of the first summaries...

State Of The Planet
2012-03-28 04:40:05

Scientists describe humanity's global impact as 'The Great Acceleration' and offer ominous outlook: An uncertain future on a much hotter world Time is running out to minimize the risk of setting in motion irreversible and long-term climate change and other dramatic changes to Earth's life support system, according to scientists speaking at the Planet Under Pressure conference, which began in London on Monday. The unequivocal warning was delivered on the first day of the four-day...

2012-03-28 03:29:34

Satellite are seeing changes in land surfaces in high detail at northern latitudes, indicating thawing permafrost. This releases greenhouse gases into parts of the Arctic, exacerbating the effects of climate change. Permafrost is ground that remains at or below 0°C for at least two consecutive years and usually appears in areas at high latitudes such as Alaska, Siberia and Northern Scandinavia, or at high altitudes like the Andes, Himalayas and the Alps. About half of the...

First-ever Use Of Airborne Resistivity System In Antarctica Allows Researchers To Look Beneath Surface In Untapped Territories
2012-03-24 03:01:55

NSF partners with international team to gather new information on hidden environments and past climate conditions in Antarctica National Science Foundation- (NSF) funded researchers have successfully tested equipment to map the hidden distribution of groundwater and ice in the McMurdo Dry Valleys region for the first time in Antarctica. The mapping technique, an airborne electrical resistivity instrument, will enable researchers to study microbial ecosystems in sub-glacial environments....

Image 1 - Unexpected Crustacean Diversity In Northern Freshwater Ecosystems
2012-03-04 06:16:02

A new species adds to evidence that subarctic regions with vanishing waters contain unique aquatic animals Freshwater ecosystems in northern regions are home to significantly more species of water fleas than traditionally thought, adding to evidence that regions with vanishing waters contain unique animal life. The new information on water fleas -- which are actually tiny crustaceans -- comes from a multi-year, international study that was published Feb. 24 in the journal Zootaxa....

Image 1 - Global Permafrost Zones Shown In High-res Google Earth Images
2012-02-21 10:07:16

Thawing permafrost will have far-reaching ramifications for populated areas, infrastructure and ecosystems. A geographer from the University of Zurich reveals where it is important to confront the issue based on new permafrost maps -- the most precise global maps around. They depict the global distribution of permafrost in high-resolution images and are available on Google Earth. Unstable cable-car and electricity pylons and rock fall — Alpine countries like Switzerland have already...

Image 1 - Ancient DNA Holds Clues To Climate Change Adaptation
2012-02-01 08:49:00

Thirty-thousand-year-old bison bones discovered in permafrost at a Canadian goldmine are helping scientists unravel the mystery about how animals adapt to rapid environmental change. The bones play a key role in a world-first study, led by University of Adelaide researchers, which analyses special genetic modifications that turn genes on and off, without altering the DNA sequence itself. These 'epigenetic' changes can occur rapidly between generations — without requiring the time for...

2012-01-31 06:11:58

These researchers assert that the Arctic is already suffering some of the effects that, according to The Intergovernmental Panel on Climate Change (IPCC), correspond with a "dangerous climate change". Currently, the rate of climatic warming exceeds the rate of natural adaptation in arctic ecosystems. Furthermore, the Eskimo population is witnessing how their security, health and traditional cultural activities jeopardize. The experts demand an effort in order to develop indicators that...

2012-01-11 14:02:12

What is the lifespan of a natural gas deposit? How quickly is our planet's permafrost melting? And does life exist on other planets? Although seemingly unrelated issues, the answers to these questions are linked. And in this month's issue of EARTH Magazine, scientists show that we may be closer to answering them than we think. Ten years ago, John Eiler, a geochemist at Caltech, couldn't convince anyone to build him his dream machine. He wanted a mass spectrometer that could measure the...

Melting Permafrost Amplifies Global Warming Effect
2011-12-01 06:15:21

According to a survey published in the November 30 issue of the journal Nature, melting permafrost in the northern climes is releasing large amounts of methane and carbon, amplifying the global warming effect. When permafrost melts, long dormant microbes come alive and break down the organic matter underneath the layers of frozen soil creating methane. Methane gas has 2.5 times the effect on the atmosphere than carbon dioxide, creating a greater warming effect. The survey, led by Edward...


Word of the Day
bodacious
  • Remarkable; prodigious.
  • Audacious; gutsy.
  • Completely; extremely.
  • Audaciously; boldly.
  • Impressively great in size; enormous; extraordinary.
This word is probably from the dialectal 'boldacious,' a blend of 'bold' and 'audacious.'
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