Fuel Cell Cost-Cutting

By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

TED演讲:和老年痴呆症说再见(5)

Even before scientists sort this out, this information is actually really good news for us, 即使科学家还尚未解决问题，这一好消息确实振奋人心， because it turns out that the way we live can influence the accumulation of amyloi

SSS 2008-05-28

This Scientific Americans 60-Second Science. I am Karen Hopkin. This will just take a minute. They say that older folks benefit from spending time with young people. And thats not just an excuse to stick grandma at the kids table at Thanksgiving. Now

SSS 2010-05-27

This is Scientific American's 60-Second Science, I'm Steve Mirsky. Got a minute? A strain of mutant mice groom compulsively till they seriously injure themselves. The condition is considered a good animal model for OCD, and its similar to the human d

英语听力文摘 English Digest 565、什么是儿童早衰症？

What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i

专业术语—口腔生理学术语M3(英文详解)

Morphogenesis - the process in which tissue shapes and organ structures are developed during embryology. Morphogenic fieled - an environment in which the shape or pattern of a developing organ is dete

SCIENCE IN THE NEWS - Ginkgo as Memory Aid Disputed / New Fi

SCIENCE IN THE NEWS - September 17, 2002: Ginkgo as Memory Aid Disputed / New Findings About Deadly Skin Cancer / Hair and Sex Lives of Lions VOICE ONE: This is Sarah Long. VOICE TWO: And this is Stev

SSS 2008-05-20

This is scientific American's 60-Second Science, I'm Karen Hopkin, this'll just take a minute. If theres anything better than a fresh, ripe, tomato, its a gigantic fresh, ripe tomato. And thanks to a couple of mutations, thats exactly what we all enj

与美国小学生一起学英文第12册 第7期:突变

Mutation 突变 Do you know about mutations? 你知道突变吗？ A mutation happens when the DNA structure in a gene changes. 当基因的DNA结构发生变化时就会发生突变。 Once a mutation happens, the change can't be reversed. 突变一旦

Gene Mutation Linked to Type 2 Diabetes

Scientists have identified a unique genetic mutation in about 10 percent of people with type 2 diabetes(糖尿病) studied in the United States and Europe. The discovery could help some people learn if they are at risk of developing diabetes so they

科学美国人60秒 SSS 2014-09-02

When you hear the word mutation, you may think of something destructive, or of Marvels X-Men. But some mutationswhich are just differences in DNAcan be historic. Take, for example, a genetic sequence found in the vast majority of people from Tibet. M

HEALTH REPORT - Melanoma Research

HEALTH REPORT - September 4, 2002: Melanoma Research By Nancy Steinbach (Photo - U.S. National Cancer Institute) This is the VOA Special English Health Report. Scientists have discovered a genetic cha

Researchers make sperm from stem cell in dish

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

CCTV9英语新闻：专家不排除禽流感有限的人际传播

Speaking on the possibility of human-to-human transmission, Dr. Zhong Nanshan, director of the Guangzhou Institute of Respiratory Diseases, said there's still no evidence at the moment. He added, however, that the medical community should keep a clos

Turn Off Your Cell Phone 关掉你的手机

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

TED演讲:昭示长寿的实验(2)

Okay. 好了 So what is the daf-2 gene? 那么daf-2基因到底是什么？ Well as you know, genes, which are part of the DNA, 正如大家所知，基因是DNA的一部分 they're instructions to make a protein that does something. 它们是经编码

为何人类爱吃肉

为何人类爱吃肉 对多数人类来说，肉的味道非常美妙。众多的美食中，为何我们对它情有独钟呢？ It is no less remarkable for people today, even those of us whose tastes run more to sirloin. Because if you look at wh

U.S. researchers discover human lung stem cell

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

人物:两次战胜癌症(1)

Surviving Cancer Twice 两次战胜癌症 After overcoming ovarian and breast cancer, the actress opens up about getting healthy, returning to work and the health challenge she still faces 在克服了卵巢癌和乳腺癌之后，这位女演员开始

人物:狗狗的DNA检查

Who do you think your pet is? Learning from Your Dog's DNA 你认为你的宠物是谁？狗狗DNA中的发现 A simple cheek swab can reveal your dog's ancestry, provide insight into its health and even help explain its behavior 擦一下狗的脸就可