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| Truncated Top Five of Ten from David Letterman |
From the Top Ten List for June 24, 1998
Top Five of Ten Signs Your Amish Teen Is In
Trouble
9.
In his sock drawer, you find pictures of women
without bonnets.
8.
Shows up at barn raisings in full "Kiss" makeup.
4.
You come upon his secret stash of colorful socks.
2.
Was recently pulled over for "driving under the
influence of cottage cheese."
1.
He's wearing his big black hat backwards.
An article in an August 1998 issue of Science News
describes a glow-in-the-dark shark which uses its
glowing ability to help attract fish.
The trick: The little shark uses its glow to blend
in with light filtering from the sky so that when
viewed from below, it is hard to see as it hangs out
toward the surface.
In addition it has a dark non-glowing spot near
its chin which looks a bit like a small fish. This
attracts other fish so that when the predator come
up to eat the "fish", the shark then bites the
predator.
The luminescece has been known for more
than a hundred years, but its strategy was recently
suggested by Edith A. Widder.
The shark: the shark is small, (30 to 45 centimeter)
small-finned, flabby, and slow. It has a
cookie-cutter lower jaw which takes out cookie-shaped
plugs of flesh out of bigger animals. Probably, the
trick works well enough so that the shark doesn't
need to be big, athletic or fast.
The article quotes Margo G. Haywood: "The oceans glow
with novel strategies of bioluminescence." The shark
strategy is a "new twist," she notes.
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