标签：atmosphere 相关文章
诸多线索综合起来为我们描绘出一幅画面：那是火星遥远的过去，那时的火星还有着一层厚厚的大气层，令这颗星球温热暖和，从而使水能够在火星表面流淌。但如今，地表的水消失不见，而
60秒科学
Why Are Nights More Calm Compared To The Day? More often than not, the wind dies down at night after a blustery day. Where does the wind go? Why are nights generally more calm than days? The difference between calm nights and windy days is the sun. D
英语听力文摘 English Digest
What Are Solar Tornadoes? Large, Earth bound tornadoes are pretty impressive weather events. Those dark, giant funnel clouds inspire much awe and fear. But theyre nothing compared to so called solar tornadoes solar gases swirling in monstrous formati
英语听力文摘 English Digest
In The Past, Insects Were Huge! Once upon a time, hundreds of millions of years ago, many insects were much larger than they are today. Scientists have found fossilized remains of dragonflies with wingspans several feet in diameter. Other insects wer
英语听力文摘 English Digest
-Im Chris Kaufman and I here with Justin Kasper, who works at Smithsonian, hes an astrophysicist at the Smithsonian. And he's won a project thats gonna launch a probe at the sun, specifically the Solar Wind Electrons Alphas and Protons investigation,
万花筒2013年
By Frank Ling Washington 07 August 2006 New research shows that global warming might be worse than expected because of melting permafrost, permanently frozen soil, which can release the greenhouse gas, carbon dioxide. Computer models predict higher
2006年VOA标准英语（八月）
We have just had the coldest October since 1945, says NIWA, the National Institute of Water and Atmosphere. The average temperature was 10.6 degrees C, which is about 2 degrees below the usual average. We had more southerly winds than usual. The sout
新西兰英语
By Brian Wagner Miami 21 June 2007 Scientists are seeking new ways to reverse the buildup of carbon dioxide in the atmosphere that many believe is the cause of global warming. Today on Searching for Solutions, VOA's Brian Wagner reports that one proj
2007年VOA标准英语（六月）
By Paul Sisco Washington 20 April 2007 NASA is preparing to launch a mission to the mesosphere, a region at the top of Earth's atmosphere where mysterious night shining clouds are formed. Little is known about the mesosphere, but its unique ice clou
2007年VOA标准英语（四月）
Pioneering Soil Researcher Wins Top Environment Prize Biologist Diana Wall went to the ends of the earth - the seemingly lifeless Antarctic desert - to study the life in soil. What soil life does for us, it provides us with many benefits that we don'
VOA标准英语2013年(四月)
It's an astounding mechanism, but it looks like it's being overwhelmed. Recently, the coral has been telling us that its had enough. Because when it overheats, it self-destructs, expelling the algae that live with them. They turn deathly pale, a proc
自然百科2011年
To make sure Kepler's truely found a planet, scientists are using one of the largest earth-based telescopes for conformation. This telescope will also determine the planet's mass and distance from its star. Scientists are most interested in the small
自然百科2010年
But there is a downside to Jupiter. It can also deflect asteroids into orbits that cross the Earths path. The Chelyabinsk meteor appears to be one of these typical Earth-crossing events. The likelihood is that it was thrown out of its regular orbit b
探索与发现2014年
Iran's foreign minister says there is a new atmosphere in talks centered on his country's controversial nuclear program. In remarks to reporters at the United Nations, Manouchehr Mottaki said there have been positive and constructive developments in
VOA标准英语2008年（七月）
ROBERT SIEGEL, HOST: Howard Norman's new novel is set in Halifax, Nova Scotia. At the core of the plot of My Darling Detective is a photograph and an auction. HOWARD NORMAN: (Reading) The auction was held at 5 p.m. in the street-level drawing room of
2017年NPR美国国家公共电台4月
Deep Seagrass Bed Could Stall Climate Change, If Climate Change Doesn't Kill It First MICHEL MARTIN, HOST: Staying on the subject of climate change for a few more minutes, there was another bright spot this past week amid all the dire warnings we hav
2018年NPR美国国家公共电台12月
One of the really exciting and high-level scientific interests is whether Venus is geological active today, because there are reasons to think of the clouds on Venus only exist, because there is ongoing geological activity, so this is one of the bigg
自然百科2012年
UFO Attack 飞碟来袭 June.Nineteen sixty-nine, not one airliner but two, plus the pilot of an Air National Guard fighter plane, report being harass ed by a team of UFOs. One man estimates the glowing ships have come within a few hundred feet. The
英语听力文摘 English Digest
If you find yourself away from a city, spend an hour looking up on any clear, moonless night. You're bound to see a few brilliant shooting stars. These actually have nothing to do with stars: They're meteors, and if your viewing conditions are good,
英语听力文摘 English Digest
Is Dew In The Morning A Good Way To Predict The Weather? 朝露能预测天气？ When the dew is on the grass, rain will never come to pass; When grass is dry at morning light, look for rain before the night. Whats the science behind this old aphori
英语听力文摘 English Digest