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thinkahol *

Record Arctic Ice Melt Threatens Global Security - 0 views

    'It is now virtually certain a child born in 1979 will not reach 50 years of age before the Arctic is ice-free in the summer. That is a rapid change on a planetary scale, with far-reaching consequences that scientists are just beginning to understand.' Stephen Leahy, Inter Press Service
thinkahol *

Researchers chart long-shrouded glacial reaches of Antarctica: Huge rivers of ice are f... - 0 views

    ScienceDaily (Aug. 19, 2011) - A vast network of previously unmapped glaciers on the move from thousands of miles inland to the Antarctic coast has been charted for the first time by UC Irvine scientists. The findings will be critical to tracking future sea rise from climate change.
Skeptical Debunker

Radar Map of Buried Martian Ice Adds to Climate Record - NASA Jet Propulsion Laboratory - 0 views

  • A radar on NASA's Mars Reconnaissance Orbiter has detected widespread deposits of glacial ice in the mid-latitudes of Mars.
  • The ability of NASA's Mars Reconnaissance Orbiter to continue charting the locations of these hidden glaciers and ice-filled valleys -- first confirmed by radar two years ago -- adds clues about how these deposits may have been left as remnants when regional ice sheets retreated.

    The subsurface ice deposits extend for hundreds of kilometers, or miles, in the rugged region called Deuteronilus Mensae, about halfway from the equator to the Martian north pole. Jeffrey Plaut of NASA's Jet Propulsion Laboratory, Pasadena, Calif., and colleagues prepared a map of the region's confirmed ice for presentation at this week's 41st Lunar and Planetary Science Conference near Houston.

    The Shallow Radar instrument on the orbiter has obtained more than 250 observations of the study area, which is about the size of California.

    "We have mapped the whole area with a high density of coverage," Plaut said. "These are not isolated features. In this area, the radar is detecting thick subsurface ice in many locations." The common locations are around the bases of mesas and scarps, and confined within valleys or craters.

    Plaut said, "The hypothesis is the whole area was covered with an ice sheet during a different climate period, and when the climate dried out, these deposits remained only where they had been covered by a layer of debris protecting the ice from the atmosphere."

    Extensive radar mapping of the middle-latitude region of northern Mars shows that thick masses of buried ice are quite common beneath protective coverings of rubble.
Ilmar Tehnas

The rise of oxygen caused Earth's earliest ice age - 0 views

    The great oxygenation event and its role in bif formation and formation of atmospheric oxygen
Ilmar Tehnas

Researchers Claim to Cook Up Isolated Magnetic Poles: Scientific American - 0 views

    Possibly but not probably an example of magnetic monopole
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