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  • CARL AZUZ: Welcome to our viewers worldwide.

  • I'm Carl Azuz.

  • And this edition of "CNN 10" begins with news

  • of a tornado and an avalanche.

  • First, in the eastern part of the US state of Alabama,

  • rescue crews are searching through the wreckage

  • left by an EF4 tornado.

  • According to one of the people helping out,

  • the homes in its path didn't stand a chance.

  • We told you yesterday that a string of twisters

  • killed 23 people in Lee County, Alabama.

  • When this show was produced, officials

  • said several more-- as many as eight-- were still missing.

  • There wasn't an official count of how many were injured.

  • But nearby hospitals said more than 70 people

  • had been treated there, with injuries

  • ranging from minor to serious.

  • One woman who wasn't in her home when it was destroyed

  • described how her boyfriend barely survived.

  • - He seen the porch fly up--

  • the front porch.

  • It was like a patio.

  • He seen that fly up.

  • And he said he had just enough time to dive to the couch,

  • which--

  • the couch was about a foot away from the screen door.

  • And he just held onto the couch for dear life.

  • CARL AZUZ: Alabama's governor extended a state of emergency

  • there.

  • It was originally issued last month because of tornadoes

  • and severe weather.

  • And one was also declared in three nearby Georgia counties.

  • That state's governor says more than 20 homes

  • and a couple businesses were completely destroyed

  • and dozens more houses were damaged in some way

  • by the storm.

  • A sheriff in eastern Alabama said

  • it looked like someone had taken a blade "and just

  • scraped the ground."

  • What kind of disaster would have this kind of power?

  • CHAD MYERS: Technically a tornado is just

  • a violent rotating column of air coming out of the bottom

  • of a thunderstorm.

  • But it takes a lot to get that violently rotating

  • column to come out.

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  • All you need for a tornado, really, to form,

  • though, are thunderstorms and a jet stream.

  • That jet stream's aloft.

  • It makes the energy.

  • If you have moisture at the surface-- dry air, cold

  • air pushing that moisture up--

  • you can get a tornado to form in any state.

  • Those days where all the ingredients combined-- you

  • get the humidity.

  • You get the dry air.

  • You get the jet stream.

  • You get upper energy in the jet stream.

  • You get winds turning as you go aloft, the higher you go.

  • The winds actually change direction.

  • That can cause storms.

  • Those things all cost storms to exist and get big.

  • Those are the ingredients that cause a big tornado day.

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  • So now the EF scale--

  • Enhanced Fujita scale-- starts at 0 and goes only to 5.

  • And anything above 200 miles per hour

  • is considered an EF5 tornado.

  • If you have a 0, you're going to lose shingles.

  • A 1, you may lose a couple of boards on the roof.

  • A 2, you'll lose all the windows and maybe even a wall.

  • A 3, EF3, you will lose a couple of walls on the outside,

  • but there will still be a part of the home standing.

  • And at 4, most of the home is gone,

  • but you'll still see the refrigerator,

  • you'll still see a closet, and you'll still see the bathroom.

  • And EF5, you cannot find a house.

  • It's completely gone.

  • We don't know how big that Fujita scale will be,

  • how big that tornado will be, literally until after we

  • look at the damage.

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  • We have this-- almost this triangulation

  • that no other country in the world, no other region

  • in the world has.

  • We have the Rocky Mountains to our west.

  • We have the Gulf of Mexico in our south.

  • We have Canada and very cold air masses

  • coming down from the north.

  • All of those things combined make Tornado Alley.

  • Typically the Plains, Texas, Oklahoma, Kansas,

  • Nebraska, all the way to Chicago, as far south

  • as the Southeast, including Georgia

  • and Alabama-- that's basically the new

  • or the bigger Tornado Alley.

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  • The greatest threat of a tornado is being hit by something

  • that the tornado is moving.

  • If you're outside or if you're not protected inside,

  • if you get hit by a 140 mile per hour two-by-four,

  • you're going to be killed.

  • So you need to be inside on the lowest level,

  • somewhere in the middle of the home, away from windows.

  • When you hear the word "warning" and you hear your county,

  • that's when you need to take cover.

  • When you hear the word "watch," that means

  • something might happen today.

  • Let's have a plan.

  • When you hear the word "warning,"

  • it's too late to make a plan.

  • You need to already have the plan.

  • "Warning's" the long word.

  • It's the bad one.

  • [MUSIC PLAYING]

  • CARL AZUZ: A little more than 24 hours

  • after launching from Florida's Kennedy Space Center,

  • a capsule made by SpaceX successfully docked

  • with the International Space Station.

  • Here's why this is significant.

  • This was a test.

  • The company SpaceX was working to prove that its new capsule,

  • the Crew Dragon capsule, was capable of ferrying astronauts

  • safely from Earth to the ISS.

  • No one was actually aboard the Crew Dragon when it launched.

  • Only after it docked with the ISIS did the people who

  • were already aboard the space station

  • go inside the Crew Dragon.

  • Since NASA retired its space shuttle program in 2011,

  • the US has paid for astronauts to hitch

  • a ride on Russia's Soyuz spacecraft to get to the ISS.

  • SpaceX could get them there on American vehicles once again.

  • SpaceX is considered a private company,

  • while NASA is an agency of the federal government,

  • though SpaceX has received billions of dollars in funding

  • from NASA.

  • Assuming the rest of its current mission goes well,

  • SpaceX plans to use its Crew Dragon

  • capsule to ferry two astronauts to the ISS this July.

  • 10-second trivia-- which of these US bridges

  • was completed in 1937?

  • Golden Gate Bridge, Brooklyn Bridge, Mackinac Bridge,

  • or Seven Mile Bridge?

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  • It's neither the oldest nor the youngest on this list,

  • but the Golden Gate Bridge is the only one

  • that was finished in 1937.

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  • At that time, it was the world's tallest

  • and longest suspension bridge.

  • And two of the elements that challenged its construction,

  • storms and fog, continue to test the Golden Gate Bridge today.

  • Part of it had to be closed to traffic

  • recently after a lingering thunderstorm

  • damaged its northbound lanes.

  • And protecting it from corrosion and rust

  • is a never-ending battle.

  • PAOLO COSULICH SCHWARTZ: The Golden Gate Bridge

  • gets its name because it spans what's

  • called the Golden Gate Strait.

  • This is a 3-mile-long and 1-mile-wide body

  • of water that connects the Pacific

  • Ocean to the San Francisco Bay.

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  • Before the Golden Gate Bridge, there was a bustling ferry

  • system that ran people and commerce

  • between San Francisco and the Redwood Empire to the north.

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  • It's actually unknown how many people worked on the Golden

  • Gate Bridge at the time of construction

  • because records were scarce from that time.

  • Today we have close to 200 employees who work to maintain,

  • to paint, to weld, to make sure that the bridge is

  • in good and safe operating condition.

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  • JARROD BAUER: So we're right now getting

  • sandblasting on the outer part of the bridge,

  • which is up underneath.

  • BRIAN RUSSELL: Right now we're where the walkway is,

  • where the pedestrians ride after 3:30.

  • So the cars are probably just about 15 feet out.

  • You can't feel it, but the bridge is probably moving

  • like this as we're standing.

  • JARROD BAUER: In a containment like this, a rough estimate--

  • 16 people sandblasting for a month and a half.

  • Our painters will go out the most critical structural areas

  • of the bridge, where the fog and the salt and the wind

  • has corroded the paint.

  • The salt eats this bridge up.

  • The fog eats this bridge up.

  • If we don't continue to paint it,

  • it's just going to rot away.

  • [MUSIC PLAYING]

  • CARL AZUZ: Having the right tires can make a car fly.

  • And in this case, we mean that literally.

  • This is a tire company's concept.

  • It's not real-- yet.

  • It would have tires pull double duty

  • as propellers that could reposition upward

  • to take a car up, up, and away.

  • It's being pitched as part of an autonomous car of the future.

  • No idea how much something like this, plus the flying car,

  • would cost.

  • But if you're asking, why do you need four of them,

  • it's because half that many would be too "tired" to fly.

  • I thought that was a "wheelie" good pun.

  • You could almost hear the rim shot afterward.

  • It's fun to take ideas like that for a spin.

  • Not every pun has been "spoke-en" for.

  • And we're always driven to ride out some more,

  • even if that means sounding a little "lug

  • nutty" at the end of the road.

  • I'm Carl Azuz, and that's "CNN 10."

  • [MUSIC PLAYING]

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CNN10】2019年3月6日 ([CNN 10] March 6, 2019)

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