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  • Hey, I'm Carl Azuz.

  • Today on CNN Student News, pollution around the world,

  • a mirage that may be a mirage, and a ghastly ghostly drone.

  • First up, an international trip by a Middle Eastern Leader.

  • Syrian President Bashar al- Assad traveled to Moscow this week.

  • Officials believe it's the first time that al- Assad has left Syria

  • since its civil war started in 2011.

  • He went to the Russian capital to meet with the man

  • who's become his main sponsor, Russian President Vladimir Putin.

  • Russian officials say the two leaders discussed working together

  • to fight terrorist extremist groups.

  • That's a term the Assad regime uses to describe anyone

  • fighting the Syrian government.

  • Russia says its military is in Syria,

  • both to fight terrorism and to help the Syrian government to stay in power.

  • In the four and a half years since the war in Syria began,

  • the human rights group Amnesty International says 200, 000 people

  • have been killed and that 11 million people,

  • that's almost two- thirds of Syria's entire population,

  • have been forced to flee their homes.

  • Today's roll call starts near the Caribbean with the city

  • in northwestern Venezuela, it's Maracaibo.

  • And we found yesterday that the students of Escuela Bella Vista

  • are watching there. Great to see you.

  • Next we're moving north to north Georgia

  • and flying with the Falcons of Flowery Branch High School.

  • Hello to our viewers in Flowery Branch.

  • And a little farther north in northeast Illinois,

  • shout out to Elmwood Park High School.

  • It's in Elmwood Park, not too far from Chicago.

  • Ahead of a climate conference in Paris next month,

  • the number of international officials are calling for a price on carbon.

  • Carbon dioxide emissions are blamed for pollution worldwide.

  • A carbon price or carbon tax

  • would require certain organizations or businesses to pay a fee.

  • The more carbon their projects give off, the more they'd have to pay.

  • Supports say this would encourage countries

  • to reduce their carbon emissions,

  • to look for cleaner ways to make products

  • and do business and to generate revenue

  • that could be used to clean up the environment or research green technologies.

  • But opponents of the idea say some businesses

  • would simply move their operations to other countries

  • where there isn't a carbon tax to avoid paying it.

  • They also say it will be expensive to institute carbon taxes

  • and carbon monitoring and that some corporations

  • could cheat to get around the fees.

  • CNN has reporters all around the world

  • and several recently discussed ways to combat pollution

  • in the cities where they work. We'll start in Hong Kong.

  • I'm Ivan Watson in Hong Kong,

  • where some of the city's 7 million residents

  • are choking on the air they breathe.

  • Cases of chest infection and asthma have soared in recent years.

  • And the problem has caused more than 2, 600 premature deaths in 2014,

  • according to a report by the University of Hong Kong,

  • and cost the economy nearly $ 4 billion.

  • Think tank, the Civic Exchange says 98 % of the worst pollutants

  • in the citie's air come from commercial shipping and ferries.

  • In July, Hong Kong introduced landmark new rules

  • limiting the sulfur content of the diesel used by ships to half of one percent.

  • And after a night full of that, a typical Delhi morning often looks like this.

  • You can barely see more than a dozen feet ahead of you.

  • Now trucks aren't allowed to ply these roads during the day, but cars are.

  • And the sheer number of cars is a problem.

  • Every day 1400 new cars join the 8. 5 million

  • already on the streets here.

  • The World Health Organization has labeled India's capital

  • the most polluted city on the planet. Policymakers are beginning to react,

  • with New Delhi's government trying out what it's calling a car- free day.

  • Delhiites will be encouraged to leave their cars at home,

  • and instead take public transport.

  • One thing the government has been trying to do is boost renewable energy.

  • Tokyo is one of the largest metropolitan areas in the world,

  • with tens of millions of people, and the cars and the industry to go with it.

  • And yet pollution here, not a very big problem. In fact,

  • as compared to most other large Asian cities,

  • Tokyo consistently ranks near or at the top of most air quality lists.

  • But it hasn't always been this way, take the Sumida River for example.

  • Clean now, it was dark with pollution back

  • during Japan's industrial booms of the 50s and the 60s.

  • It took decades of environmental reforms before the problem

  • was largely solved by the mid- 1990s.

  • As beautiful as Paris might be, there are some days

  • when you could barely see the Eiffel Tower for the pollution.

  • That's something the mayor of Paris has been intent on

  • changing almost since the day she was elected.

  • The city has taken a number of anti- pollution measures,

  • including last July, a ban on older diesel powered trucks

  • and buses from the streets of Paris,

  • something that will be expanded over coming years to include newer models.

  • But all this does not just have to do with health concerns.

  • The world climate change conference begins here in late November,

  • and a polluted Paris would not be the best image

  • to present to the thousands of environmentalists who are expected to attend.

  • I'm Diana Magnay in London.

  • Now London's mayor Boris Johnson

  • is making big changes to the city streets, in a bid to improve air quality.

  • Starting off by cleaning up the bus fleets,

  • he's brought 1300 new hybrid busses to this city's streets,

  • with hundreds more expected next year.

  • And he's also mothballing 6, 000 of the oldest most polluting black cabs.

  • He also wants this whole city by 2020

  • to be the world's first ultra low emission zone

  • and that means that if your car doesn't mach the right standards by then,

  • you'll have to pay a fine when you drive through the center of town.

  • See if you can ID me. I come from a French term meaning to be reflected.

  • but I'm actually caused when light rays are refracted or bent.

  • I'm the illusion of an object, like a lake in the distance,

  • though it's not actually there at all.

  • I'm a mirage and I can be seen in the desert, or at sea.

  • Mirages and Fata Morganas are similar.

  • They're both illusions,

  • they're both related to the way light rays

  • pass through layers of different temperatures.

  • And they both fool us.

  • Whether it's the oasis in the desert or a car

  • appearing to float in the heat of the sun,

  • these visual phenomena confuse the message

  • between our eyes and our brain.

  • This video surfaced out of China,

  • and it looks like their city is floating in the clouds.

  • Of course, we can't verify if the video is real or not,

  • but we have seen things like this before.

  • This is a type of superior mirage called a Fata Morgana,

  • where air temperature at the surface is actually cooler than the air above.

  • It can make objects appear like they are stacked on top of each other,

  • or in this case, like a city floating in the clouds.

  • The same phenomenon happens when you're driving in your car

  • on a hot day and you see what appears to be water or something liquid

  • on the road in the distance.

  • Or you've heard of people walking through the desert

  • and they see water in the distance and then once you get closer it disappears.

  • Light waves travel through the atmosphere from the sun straight to your eye.

  • But they actually travel through the atmosphere at different speeds.

  • A mirage occurs when the temperature on the ground

  • is hotter than the air above.

  • When light travels through the cooler air into that warmer air near the ground,

  • the light is refracted or bent.

  • And what your eye is seeing is not that U- shaped bend, but an illusion.

  • Maybe going out as a ghost isn't the most original Halloween idea.

  • But it is if you're a drone. Look at this.

  • A man in Arizona dressed up his drone

  • as something spectacularly spooky.

  • And just had it hover around the block for awhile,

  • creeping out some cars. It took more effort in battery

  • than just using a sheet with some eye holes cut out of it,

  • and imagine what it would look like in the dark

  • if you couldn't see the propellers.

  • You might call that downright wraithful.

  • But let's be transparent about this,

  • now that someone's floated the idea,

  • it might not fly with over protective parents

  • who could give it a propeller take down.

  • There's just a ghost of chance that they become ghost busters.

  • I'm Carl Zeus, and we've got to ghost,

  • but we hope you'll drift by tomorrow for more CNN Student News.

Hey, I'm Carl Azuz.

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October 22, 2015 - CNN Student News with subtitle

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    VoiceTube 發佈於 2015 年 10 月 22 日
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