第二页:LRC同步字幕
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[00:10.47]Could mutant mosquitoes stop the dangerous Zika virus?
[00:15.40]Hi. I'm Carl Azuz, and that's what's first up on our show today.
[00:18.53]Zika, as we've told you, can dramatically harm the unborn babies of pregnant women.
[00:24.71]But mosquitoes also carry malaria, yellow fewer, West Nile virus.
[00:27.31]The insects are responsible for more human deaths than any other animal on the planet.
[00:35.43]And so far, people have been unsuccessful in exterminating them long term.
[00:37.04]Now, scientists are considering waging biological and genetic warfare against mosquitoes.
[00:43.17]One option would infect them with bacteria that would stop the growth of viruses,
[00:47.69] like Zika, inside mosquitoes.
[00:49.44]Another would use gamma radiation to sterilize male mosquitoes to keep them reproducing with females.
[00:55.78]A third possibility: genetically modified male mosquitoes to pass a deadly gene to wild female mosquitoes.
[01:03.15]Critics say all of these ideas have major problems.
[01:06.18]They're not proven to work.
[01:08.42]There are concerns about how they'd impact the environment, or the people living in it.
[01:12.47]An environmentalist with Emory University says it's possible these methods could become useful tools,
[01:18.62] though not a silver bullet in fighting off man's deadliest enemy.
[01:22.68]Call them stargazers, sun seekers, see the moonlights in their eyes.
[01:27.28]Thousands of people in the Pacific island
[01:28.95]nation of Indonesia looked up Wednesday morning to view a total solar eclipse.
[01:33.61]This is when the moon moves directly between the earth and the sun.
[01:36.80]The best view was on the Indonesian island of Sumatra,
[01:39.67]but the event was partially visible from Hawaii to Malaysia to Australia.
[01:43.95]The next total solar eclipse is expected on August 21st of next year,
[01:49.37]and would be visible in a narrow part of the U.S.
[01:51.56]REPORTER: Watching as the moon blocks out the light from the sun,
[01:59.99] it can be hard to imagine the amazing cosmic coincidence taking place.
[02:05.01]The sun's diameter is some 400 times larger than the moon's,
[02:08.49]but it's just the right distance away to appear the same size.
[02:12.30]For a couple of minutes when the sun and moon are perfectly aligned,
[02:18.28]the moon completely covers the sun's disc.
[02:20.96]The sun's atmosphere or corona can be seen in the dim light, along with stars and planets.
[02:27.60]This so-called totality only exists in a narrow band, where the moon's shadow falls on the Earth.
[02:34.42]Outside this zone, some observers can see a partial eclipse,
[02:38.85]where it looks like a chunk has been taken out of the sun.
[02:41.82]It's not a phenomenon that will last forever.
[02:45.04]The moon is slowly moving away from the Earth and one day,
[02:48.98]it will appear too small in the sky to cover the sun completely.
[02:52.19]If you are lucky enough to see this incredible spectacle, remember,
[02:56.71]never look directly at the sun, even with everyday sunglasses.
[03:01.12]You risk causing permanent damage to your eyes.
[03:04.70](END VIDEO TAPE)
[03:05.27]AZUZ: You know why yesterday's transcript page was awesome,
[03:12.58]because it's where we found these three schools for our "Roll Call".
[03:16.15]We're starting in Quezon City.
[03:18.07]It's in the island nation of the Philippines,
[03:20.34]and it's where Far Eastern University is watching.
[03:22.86]Next, to Platinum, Alaska, the miners are here today.
[03:26.22]Hello to everyone at Arviq School.
[03:28.36]And our third mention goes to Christian County High School.
[03:31.96]It's in Hopkinsville, Kentucky.
[03:33.43]We're saluting the Colonels.
[03:35.04]Several parishes in the U.S. state of Louisiana are under a flash flood emergency.
[03:39.99]As of yesterday, they've gotten between eight
[03:42.19] and fourteen inches of rain in a short amount of time,
[03:45.42]with another three to five inches possible by this morning.
[03:48.70]Dozens of homes were evacuated.
[03:50.42]Part of Interstate 20 was shut down.
[03:53.40]It's because of a slow-moving storm system that's soaking areas in nine states,
[03:57.74]from Texas to Illinois.
[03:59.02]When severe weather strikes, the leading cause of death isn't tornadoes or hurricanes.
[04:04.53]It's flooding.
[04:05.23]And drivers are in serious danger.
[04:06.79](BEGIN VIDEOTAPE)
[04:07.80]JENNIFER GRAY, AMS METEOROLOGIST: Anytime we have major flooding events,
[04:11.11]very heavy rainfall, unfortunately, the images are all too common of cars being swept right off the road,
[04:16.69]many times, the drivers still inside and water rescues taking place.
[04:21.88]It only takes a little bit of water to carry your car off the road.
[04:29.57]In fact, six inches of water will sweep you, me off of our feet.
[04:33.54]One foot of water will float your car
[04:36.23]and it only takes two feet of water to completely wash your car away.
[04:41.31]That's why we say it's so important to turn around, don't drown.
[04:45.51]You don't know how much water is there.
[04:47.93]Do not drive through it, as it could be deadly.
[04:50.60](END VIDEOTAPE)
[04:51.15]AZUZ: On the eastern coast of mainland Japan,
[04:52.85]there are ghost towns, contaminated by radiation.
[04:56.13]Some of the houses clearly show the damage
[04:58.54] of the earthquake that struck five years ago, on March 11th.
[05:01.89]Some where entirely swept away by the tsunami,
[05:05.22] the wall of water that washed in from the Pacific afterward.
[05:08.61]Tomorrow, on the actual anniversary,
[05:10.93]we're taking you inside one of these abandoned towns.
[05:14.42]Today, an overview from a drone.