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

kevinliu6883UID: 2338522

Wolves have roamed only wild in Alaska for thousand years. Right? Well yes or no, because a team of scientists has found the ancient great wolves of Alaska actually went extinct about 12 thousand years ago. And wolves in Alaska today are not their descendants. There are unique subspecies. The report appeared on the journal of Current Biology. Scientists analyzed DNA samples and carbon date from ancient wolves remains stored in Simithsonian Institutions. They did similar investigation of the modern wolves Asian wolf and found the ancient remains were genetically distinct. The ancient wolf lived in Alaska continuously from at least 45 thousand ago to when they were extinct 12 thousand years ago. They competed for food with lions, saber-toothed cats and gigantic bears. The extinct wolves were about the same sizes as todays but much large teeth and jamble jaw muscles so they can kill large species. Many mammals became extinct at about the same time as old wolves. Possible causes include competition with humans for the same prey and the global warming that marks the end of the late pleistocene.

woodmanUID: 161906

音频传上

youngerhotUID: 2286031

有没有号点练听抄的

H-KevinUID: 2182070

July 05

based on kevinliu6883

Wolves have roamed only wild in Alaska for thousand years. Right? Well yes or no(yes and no) , because a team of scientists has (just) found the ancient great wolves of Alaska actually went extinct about 12 thousand years ago. And wolves in Alaska today are not their descendants. There are unique subspecies. The report appeared on the journal of Current Biology. Scientists analyzed DNA samples and (did )carbon date (dating) from ancient wolves remains stored in Simithsonian Institutions. They did similar investigation of the modern (Alaska) wolves Asian wolf and found the ancient remains were genetically distinct. The ancient wolf lived in Alaska continuously from at least 45 thousand ago to when they were extinct 12 thousand years ago. They competed for food with lions, saber-toothed cats and gigantic bears. The extinct wolves were about the same sizes as todays but much large teeth and jaw muscles so (then) they can kill large species. Many mammals became extinct at about the same time as old wolves. Possible causes include competition with (from) humans for the same prey and the global warming that marks the end of the late pleistocene.

zhangjie_0202UID: 2356463

佩服:)

H-KevinUID: 2182070

July 03

Based on wizjo

There are hot peppers like the halapeneo--Jalapeño, and there are incendiary peppers like the legendary habanero. Now there is a new variety of thermonuclear habanero known as the Tiger-Paw-NR habanero. The name comes from its appearance--the bright orange pepper resembles the tiger's paw, and NR stands for nematode-resistant. The pepper was brought by US Department of Agriculture scientists to be resistant to nemotode--roundworms that attack the plant's roots. The pepper was brought conventionally not genetically engineered. And it does away with the need to use soil fumigant--methyl bromide which has been phased out. So how hot is the Tiger-Paw hapanero? Pepper hotness is measured on something called the scoville heat scale. A halapeneo comes in at about 5,000 on the scoville scale. A regular hapanero ususlly scores at least a hundred thousand; and a Tiger-Paw hapanero tops the scoville scale at almost 350,000. In fact there is a legend that eating hapanero peppers can have the side effect actuallly making you deaf; but only so that you cannot hear your own screams.

NOTE:

The Scoville scale is a measure of the "hotness", or more correctly, piquancy, of a chili pepper. These fruits of the Capsicum genus contain capsaicin, a chemical compound which stimulates chemoreceptor nerve endings in the skin, especially the mucus membranes. The number of Scoville heat units (SHU) indicates the amount of capsaicin present. Many hot sauces use their Scoville rating in advertising as a selling point. The scale is named after its creator, American chemist Wilbur Scoville.

wizjoUID: 2175360

:loveliness:
Thanks a lot, H-Kevin banban.

woodmanUID: 161906

音频传上

AllenTingUID: 2308616

60-Second Science: July 6, 2007from 60-Second Science
Teens Miss Warnings In Alcohol Ads



You know the phrase 'out of sight, out of mind'?Turns out it's literarily true when it comes to the teenages on those responsible drinking messages the alcohol advertisers put all over the place.A new breaking young university study tracked the eye movement of the teenages as they looked at the alcohol advertisements and public service messages.Researchers let the teens look at the magazine on alcohol as long as they wanted which turned out to be on average for about 7 seconds.The ads also included text of/ urgent responsible drinking.And the teenages looked at that back/ for a grand/ total of one third of the second.Computer analysis showed the young people spent most of their time looking at bottles,product names,models and headlines.In 2 ads,just 12% of the teams even noticed the responsibility message,and it gets worse.The team reinvented/ some as a second time with some responsibility messages blacked out to see if they have even a vague memory of the warnings.But 94% couldn't even identify the general concept of the messages.So please remember,when your advertise alcohol,please advertise responsibly.

ericasamakiUID: 2356903

加油加油

violawydUID: 2286537

多谢！

0202010109UID: 2280620

xbx_leeUID: 129512

那个univ.我没听出来。小问题不深究了，一句话偏得比较厉害：And it gets worse, the teens were then shown ads a second time with the responsibility message blacked out to see if they even had the vague memory of the warnings.

wizjoUID: 2175360

July 06, 2007: 60-Second Science
Teens Miss Warnings In Alcohol Ads

You know the phrase "Out of sight, out of mind"? Turns out it's literally true when it comes to teenagers and those responsible drinking messages that alcohol advertisers put all over the place. A new Brigham Yong University study tracked the eye movement of teenagers as they looked at alcohol advertisements and public service messages. Researchers let the teams look at magazine alcohol ads as long as they wanted, which turned out to be on average for about 7 seconds. The ad also included text urging "Responsible Drinking". And the teenagers looked at that for a grand total of 1/3 of a second. Computer analysis showed that the young people spent most of their time looking at bottles, product names, models and headlines. In two ads, justs 12% of the teams even noticed the responsiblity message. And it gets worse. The teams were then shown at a second time with the responsibility message blacked out, to see if they had even a vague memory of the warnings. But 94% percent couldn't even identify the general concept of the messages. So please remember, when you advertise alcohol, please advertise responsibly.

明天就要考了，bless～:loveliness:

H-KevinUID: 2182070

Junly 06

Based on wizjo

You know the phrase "Out of sight, out of mind"? Turns out it's literally true when it comes to teenagers and those responsible drinking messages that alcohol advertisers put all over the place. A new Brigham Yong (Young)University study tracked the eye movement of teenagers as they looked at alcohol advertisements and public service messages. Researchers let the teams look at magazine alcohol ads as long as they wanted, which turned out to be on average for about 7 seconds. The ad(ads) also included text urging "Responsible Drinking". And the teenagers looked at that for a grand total of 1/3 of a second. Computer analysis showed that the young people spent most of their time looking at bottles, product names, models and headlines. In two ads, justs (just) 12% of the teams even noticed the responsiblity message. And it gets worse. The teams were then shown at a second time with the responsibility message blacked out, to see if they had even a vague memory of the warnings. But 94% percent couldn't even identify the general concept of the messages. So please remember, when you advertise alcohol, please advertise responsibly.

wizjo 写的很全了，祝你明天考得很好:)