Wednesday, August 6, 2008

Tree Magic

http://www.sunshinepress.com/tmagic.pdf

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Sunday, July 6, 2008

Amazing striped icebergs

Icebergs in the Antarctic area sometimes have stripes, formed by
layers of snow that react to different conditions.

Blue stripes are often created when a crevice in the ice sheet
fills up with meltwater and freezes so quickly that no bubbles form.

When an iceberg falls into the sea, a layer of salty seawater can
freeze to the underside. If this is rich in algae, it can form a
green stripe.

Brown, black and yellow lines are caused by sediment, picked up
when the ice sheet grinds downhill towards the sea.




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Saturday, May 24, 2008

A husband-and-wife team in Montana studies the elusive wolverine

http://features.csmonitor.com/environment/2008/05/20/a-husband-and-wife-team-in-montana-studies-the-elusive-wolverine/

Steve Gehman and Betsy Robinson brave frostbite, avalanches, and bears to track the imperiled animal in the northern Rockies.

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Thursday, May 22, 2008