单词：bacterial photosynthesis
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses wavelengths of blue and our sun's ab
Scientific American(四)月
This is Scientific Americans 60-second Science. I'm Adam Hinterthuer. Got a minute? The Komodo dragon is the largest living lizard and a fearsome predator. It has long been thought that some of its hunting prowess was due to a mouth teeming with bact
Scientific American(五)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths original atmosphere would have been unpleasantdeadly in factto any organisms that breathe oxygen. There wasnt any. Not until about 2.4 billi
Scientific American(四)月
Xiapu, the oldest town in eastern Fujian, Xiapu City, Fujian has many natural harbors along its coastline. 霞浦，闽东最古老的县份-福建 霞浦市-漫长的海岸线为这里制造出众多的天然港湾。 The sea has become a natural la
舌尖上的中国第一季
(man) Today I want to discuss fossil fuels such as coat, oil, and natural gas. The term fossil fuel refers to the trapped remains of plants and animals in sedimentary rock. You see, living plants trap energy from the sun by the process of photosynth
托福听力短文
This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan
Scientific American(八)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. It may look like just another animal. But one kind of lowly sea slug actually has the solar power abilities of a plant. Bizarre but true, the sea slug
Scientific American(十二)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar
Scientific American(一)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Mosquitoes carry nasty diseasesdengue fever, west nile, malaria. But the microbes that cause those diseases dont attach themselves to the mosquitoes an
Scientific American(一)月
One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water
Scientific American(四)月
Amazing Amazon Hides Atlantic's Coral Reef 神奇的亚马逊隐藏着大西洋的珊瑚礁 Scientists studying the area where the Amazon River meets the Atlantic Ocean were in for a surprise. Under the muddy, dark Amazon River water was a large numb
2016年VOA慢速英语(五)月
ROBERT SIEGEL, HOST: Adam Frank usually has his head in the sky. He's an astrophysicist. It's an occupational hazard. Right now, though, he is dazzled by the universe of green right here on Earth. ADAM FRANK, BYLINE: Now that we're well past the star
2017年NPR美国国家公共电台6月
The first day of the experiment, we got out to our plot 实验的第一天，我们来到了实验地点， and a grizzly bear and her cub chased us off. 突然一头灰熊和她的熊宝宝出现，把我们赶跑了。 And I had no bear spray. But
TED演讲科学篇
很多来学雅思的同学见了老师都会说：文章太难了，那么多生词，是不是每个都要查中文释义并且背下来才能考好啊?如果你也有这样的困惑，不妨耐心地往下读，本文会给大家解答这方面的问
雅思英语
Science and technology 科学技术 Going underground 向地底进军 A project to reveal more about all the carbon on Earth 旨在向人们揭示更多地球碳信息的项目 The Deep Carbon Observatory 深碳观测站 A world still full of secrets
经济学人科技系列
BEIJING, Oct. 18 (Xinhuanet) -- Some seaweeds can kill the reef-building corals around them by emitting anti-coral chemicals, a new study found. The study was published Monday in the online edition of the journal Proceedings of the U.S. National Acad
英语新闻
The latest survey of the Great Barrier Reef off the coast of Australia reveals that an average of 35 percent of coral is now dead or dying in the northern and central sections. Experts from James Cook University say its the most extreme case of mass
中英双语新闻
Heather, when plants convert light into energy to help them grow it's called photosynthesis. 希瑟 植物把光转换成能量 来帮助它们生长 这叫做光合作用 But what is a photo of yourself taken by yourself called? 但把自己给自己拍
艾伦脱口秀
Anniversaries were few and far between in the Archaean world. 在太古代的世界里，结婚周年纪念日是完全没有的。 For two billion years bacterial organisms were the only forms of life. 在20亿年时间里，细菌是惟一的生命形
万物简史
Once it seemed that the ocean floor was a desert of darkness. As everyone knew， sunlight was what made life possible by fueling photosynthesis， and sunlight can penetrate only the first few hundred yards of the oceans great depths. Lower， a few
托福英语