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From User: noteworthy

Current Topic: Science

Starry, Starry, Starry Night
Topic: Science 11:52 am EDT, Apr 28, 2013

Stunning!

The Orb:

What were the skies like when you were young?

They went on forever
and they,
when I,
we lived in Arizona
And the skies always had little fluffy clouds
And they moved down,
they were long and clear
And there were lots of stars at night

Julie Bosman:

What would New York or Shanghai look like with a full sky of brilliant stars? Thierry Cohen, a French photographer, thinks he can show us by blending city scenes -- shot and altered to eliminate lights and other distractions -- and the night skies from less populated locations that fall on the same latitudes. The result is what city dwellers might see in the absence of light pollution. So Paris gets the stars of northern Montana, New York those of the Nevada desert. As Cohen, whose work will be exhibited at the Danziger Gallery in New York in March, sees it, the loss of the starry skies, accelerated by worldwide population growth in cities, has created an urbanite who "forgets and no longer understands nature." He adds, "To show him stars is to help him dream again."

Michiru Hoshino:

Oh! I feel it. I feel the cosmos!

Starry, Starry, Starry Night


Gödel, Escher, Bach: A Mental Space Odyssey
Topic: Science 12:00 pm EDT, Jun  7, 2009

Ooo...can't wait to check these video lectures out! Thanks Noteworthy!

Navigate the mind-expanding universe of Gödel, Escher, Bach with MIT OpenCourseWare:

What do one mathematician, one artist, and one musician all have in common? Are you interested in zen Buddhism, math, fractals, logic, paradoxes, infinities, art, language, computer science, physics, music, intelligence, consciousness and unified theories? Get ready to chase me down a rabbit hole into Douglas Hofstadter's Pulitzer Prize winning book Gödel, Escher, Bach. Lectures will be a place for crazy ideas to bounce around as we try to pace our way through this enlightening tome. You will be responsible for most of the reading as lectures will consist primarily of motivating the material and encouraging discussion. I advise everyone seriously interested to buy the book, grab on and get ready for a mind-expanding voyage into higher dimensions of recursive thinking.

Check out the video lectures.

From the archive, on Hofstadter:

What do we mean when we say "I"?

Freeman Dyson:

After Gödel, mathematics was no longer a single structure tied together with a unique concept of truth, but an archipelago of structures with diverse sets of axioms and diverse notions of truth. Gödel showed that mathematics is inexhaustible. No matter which set of axioms is chosen as the foundation, birds can always find questions that those axioms cannot answer.

Dr. Nanochick on the Geek Test:

I feel truly geeky because I can think of something that should have gotten me geek points that wasn't on the list -- owning the "Real Genius" DVD and reading "Gödel, Escher, Bach."

Gödel, Escher, Bach: A Mental Space Odyssey


In Battling Cancer, a Genome Project Is Proposed
Topic: Science 7:12 pm EST, Mar 28, 2005

It's the 21st century version of "guns or butter?"

The project would determine the sequence of the DNA in at least 12,500 tumor samples, 250 samples from each of 50 major types of cancer. By comparing the order of the letters of the genetic code in the tumor samples with one another and with sequences in healthy tissue, it should be possible to pinpoint mutations responsible for cancer.

But the proposition is extremely daunting. In general, each tumor cell holds a full panoply of human DNA, a string of three billion letters of the genetic code. So determining the full sequence of all the tumors would be the equivalent of 12,500 human genome projects. At a cost of many millions of dollars for one genome, the full project would be out of the question for now.

So the cancer proposal for now is to sequence only the active genes in tumors, which make up 1 percent to 2 percent of the DNA. Even that would require at least 100 times as much sequencing as the Human Genome Project.

In Battling Cancer, a Genome Project Is Proposed


Startling Scientists, Plant Fixes Its Flawed Gene
Topic: Science 9:56 pm EST, Mar 23, 2005

In a startling discovery, geneticists at Purdue University say they have found plants that possess a corrected version of a defective gene inherited from both their parents, as if some handy backup copy with the right version had been made in the grandparents' generation or earlier.

The finding implies that some organisms may contain a cryptic backup copy of their genome that bypasses the usual mechanisms of heredity. If confirmed, it would represent an unprecedented exception to the laws of inheritance discovered by Gregor Mendel in the 19th century. Equally surprising, the cryptic genome appears not to be made of DNA, the standard hereditary material.

The discovery also raises interesting biological questions -- including whether it gets in the way of evolution, which depends on mutations changing an organism rather than being put right by a backup system.

Startling Scientists, Plant Fixes Its Flawed Gene


 
 
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