Scientific American 60 Second Science听抄（有音频文件）

forerunnerUID：2234967

woodman come back:) :handshake

forerunnerUID：2234967

今天的音频怎么这么晚才出来:confused::confused:

forerunnerUID：2234967

forerunnerUID：2234967

It has been a tough year for Pluto. Lastsummer astronomers demoted the icy sphere to dwarf planet status. Now the dwarfplanet formerly known as Xena has displaced Pluto as a larger such objectknown. That’s according to a report in the Journal Science. Named after Eris,the goddess of strife, the (icy ??????:confused::confused: :confused:)proved tobe 27% more mass(massive) than Pluto whenexamined by astronomer Michael Brown of the California Institute of Technologywho also discovered Eris. He used the Hubble Space Telescope and Keck observatory, as well as the orbital periodof Eris’s moon Dysnomia to determine the density of what is now the queen ofthe dwarf planets. She weighs in at 16.6 billion trillion kilograms and has agirth of 2400 kilometers, making her the pudgier of the two dwarfs. Plutodoesn’t even have the most eccentric orbit in the Kuiper belt any more, but atleast Pluto would always have the 76 glorious years that was officiallyclassified as the ninth planet. With Pluto out, the planetary mnemonic I learned as a child has been changed to, myvery excellent mother just sent us, nothing.




the (icy ??????:confused::confused: :confused:)proved:confused::confused::confused:

forerunnerUID：2234967

thx u r information:handshake

i think on this website ,u can get a lot of useful knowledge

http://www.gps.caltech.edu/~mbrown/planetlila/

forerunnerUID：2234967

1905:Percival Lowell starts the search for PlanetX. The planets, including the newly discovered Neptune, didn't move around thesun in quite the way gravitational laws predicted, and Lowell proposes that anundiscovered planet must be the reason why. He never finds Planet X before hisdeath in 1916.
Feb.18, 1930: Clyde Tombaugh takes up the searchin 1929 at Lowell'sobservatory and proves that discovering new planets is not glamorous work. Fora year, he photographs the same section of sky several nights apart and thensearches the images for any objects that move like a planet should. On Feb. 18he looks at his photographic plates and knows right away that one of the dotsis Planet X.
May1930: A little girl in Britaininterested in Greek and Roman mythology tells her grandfather over breakfastthat the new planet should be named Pluto. He cables the Lowell Observatory,and they unanimously vote for the name because Pluto is the god of theunderworld, which seems appropriate for such a cold and remote planet, and thefirst two letters of Pluto are Percival Lowell's initials.
June22, 1978: The U.S. Naval Observatory's JamesChristy discovers that Pluto has a moon. He names it Charon, after the ferrymanwho take souls into the underworld in Greek mythology, but pronounces it Sharon because his wife'sname is Charlene. The existence of Charon meant that scientists could get abetter read on the mass of Pluto. They found that Pluto and Charon are actuallypretty small. Together, they're smaller than Earth's moon, even.
Aug.30, 1992: Pluto's tiny size didn't disqualifyit from being a planet, but then David Jewitt, an astronomer at the Universityof Hawaii, and Jane Luu, a researcher at the University of California,Berkeley, discover Pluto isn't the only chunk of rock and out there in theKuiper Belt beyond Neptune. Scientists have found hundreds of these objectssince 1992, so some astronomers start to think that maybe Pluto isn’t sospecial after all.
Feb.3, 1999: Pluto's debated status as a planetgets publicity. The International Astronomical Union calms stargazers worriedby recent media reports saying the IAU is planning to demote Pluto. Not so,they say in a press statement. They only want to include it in their numberingsystem for Kuiper Belt objects.
May11, 2000: Scientists may debate whether Plutois a planet, but it's place in the classical music canon gets secured. ComposerColin Matthews writes a movement for Pluto into Gustav Holst's The Planets. AlthoughPluto was discovered in Holst's lifetime, he declined to add it to his suite.
Feb.19, 2000: The RoseCenter for Earth and Space at the American Museumof Natural History in New York Cityopens -- and sneakily omits Pluto from its list of planets. No one seems tonotice until the next year, when the New York Times writes a front page articleabout it.
Jan.5, 2005: Michael Brown, a planetary scientistat the California Institute of Technology, discovers what might be the 10thplanet, Xena. He says it's rocky and icy like Pluto. When he announces hisdiscovery on July 29, he forces astronomers to decide what makes a planet.
Oct.31, 2005: The Hubble Space Telescope PlutoCompanion Search Team discovers that Pluto has three moons, not just one. Moonsdon't qualify an object to be a planet, but having a couple moons doesn't hurtPluto's case.
April11, 2006: The Hubble Space Telescope findsthat Xena is slightly larger than Pluto. Astronomers now have to make adecision: either Xena and Pluto are both planets or neither is a planet.
August24, 2006: The International Astronomical Unionstrips Pluto of its planetary status. The group says a planet must, among otherthings, have "cleared the neighborhood around its orbit." BecausePluto's orbit overlaps Neptune's, Pluto isout. The celestial body formerly known as the ninth planet will be reclassifiedas a "dwarf planet."

forerunnerUID：2234967

forerunnerUID：2234967

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Inflammation's Newly Recognized Role inCancer
      

Inflammation helps promote healing.
But chronic inflammation can play a role invarious diseases,
and researchers are beginning to appreciatethat inflammation may help tumors grow and spread.
Anti-inflammatory medications could be thenext wave of cancer drugs. Steve Mirsky reports.


The medical dictionary defines inflammationas the reaction of the part of the body to injury or
infection characterize by swallowing heat rednessand pain process includes increased blood flow with the in flux white bloodcells and other chemical substances that facilitate healing. So inflammation isgood except one is bad. In the past 15 years the medical community is realizethat inflammation contribute to heart disease by helping the form arterial plugand to diabetes and possibly even to depression. And according to an article onthe July issue of Scientific American more and more researches have coming tothe realization the inflammation may also play a crucial role in development ofcancer. Until recently genetic changes with the primary focus of the cancerstudy but in last decade it’s become clear that developing tumors can take oversome of the molecular apratuec (??):confused: inflammation and use to grow and spread.The good news is that this realization opens (not sure) a new realm ofpotential anti-cancer drugs. Anti-inflammation medications might have the potentialto stop new tumors in their tracks.


please correct......

forerunnerUID：2234967

icy(usurper，篡夺者):handshake :handshake :handshake
thx

forerunnerUID：2234967

May 30, 2007
我问：最后唱的是Video tune video ?:funk:

woodman回：最后唱的是Video tune，video (tune)…


很偶然的发现了那首歌:):):)
happy:loveliness::loveliness:

其实是：Video killed the radio star.

[ 本帖最后由 forerunner 于 2007-6-19 19:01 编辑 ]

forerunnerUID：2234967

歌词：
The Buggles

Video Killed The Radio Star Lyrics


I heard you on the wireless back in Fifty Two
Lying awake intent at tuning in on you.
If I was young it didn't stop you coming through.


Oh-a oh


They took the credit for your second symphony.
Rewritten by machine and new technology,
and now I understand the problems you can see.


Oh-a oh

I met your children
Oh-a oh

What did you tell them?
Video killed the radio star.
Video killed the radio star.


Pictures came and broke your heart.
Oh-a-a-a oh


And now we meet in an abandoned studio.
We hear the playback and it seems so long ago.
And you remember the jingles used to go.


Oh-a oh


You were the first one.
Oh-a oh


You were the last one.


Video killed the radio star.
Video killed the radio star.
In my mind and in my car, we can't rewind we've gone to far
Oh-a-aho oh,
Oh-a-aho oh


Video killed the radio star.
Video killed the radio star.


In my mind and in my car, we can't rewind we've gone to far.
Pictures came and broke your heart, put the blame on VTR.


You are a radio star.
You are a radio star.
Video killed the radio star.
Video killed the radio star.
Video killed the radio star.
Video killed the radio star.


Video killed the radio star. (You are a radio star.)

forerunnerUID：2234967

The Buggles

Video Killed The Radio Star:):)


可以在线观看:http://www.youtube.com/watch?v=Pe9FMoElCoU

也可下载:共4部分
格式为  .flv

forerunnerUID：2234967

forerunnerUID：2234967