Antarctic Sea Ice - Expanding Ice on a Warming Planet
A Week in Science is the science brought to you by RiAus.
Paul looks at Antarctic Sea Ice before his journey south.
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Dendrites form as weathering frees ions from the minerals (in this case, possibly including bits of volcanic glass) making up the parent rock. Some ions, for example, sodium, potassium and calcium, are quite soluble, and tend to be carried off by water. If that water ends up in a closed basin, those minerals may precipitate out again as salts of one kind and another. Other ions, including manganese and iron, are much less soluble and hence less mobile; they might dissolve briefly, only to
The Pangaea Pop-up
The supercontinent Pangaea, with its connected South America and Africa, broke apart 200 million years ago. But the continents haven’t stopped shifting — the tectonic plates beneath our feet (in Earth’s two top layers, the lithosphere and the asthenosphere) are still traveling at about the rate your fingernails grow. Michael Molina discusses the catalysts and consequences of continental drift.
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Photographing the Grand Canyon from Space
How do you touch space without even leaving the ground? Near Space Photographer John Flaig outfits weather balloons with cameras to capture novel images of iconic landscapes, such as the Grand Canyon.
Explore the Colorado River, the life and soul of the American West:http://www.nationalgeographic.com/americannile/
via National Geographic.
Congratulations to Scott Linneman for his Carnegie Award as Professor of the Year. One of the percs of living in a university town is the chance to get some excellent continuing education. Scott has contributed to my being a better geologist. The video is a nice clip of Scott and his students at one of my favorite natural disasters, the Swift Creek Landslide (go to labels on the side bar of this blog and click Swift Creek).
We blew past our final check in for the 28-day, February edition of #sciwrite, but that’s because we’ve got some momentum going and didn’t want to say stop. 28. 33. It’s within the margin of error of a month, right? … Continue reading →