CNN news 2013-06-10 加文本

cnn news 2013-06-10

Welcome to Wednesday. This is cnn StudentNews. We're going to get things started today with different forms of extreme weather.

First up, fire. This one in California has burn more than 30,000 acres, butfire fighters have around 60 percent contained, and some people who were toldto leave their homes because of the fire had been allowed to go back.

Different story with this blaze in the mountains of Mexico, it has only burnaround 8,500 acres, so significantly less than California. But it was also lessthan 10 percent contained yesterday.

From fire now to water, the Mississippi and Missouri River have topped theirbanks in some places, flooding areas along their path. Waters broken throughtwo levees, barriers that is designed to hold back flood waters.

This is cnn Martin Savidge. Last August, he was standing in the basin of the MississippiRiver near Memphis Tennessee. It had dried up then, because of severe drought.Now, Martin Savidge again as water from the Mississippi rushes across the roadand over his feet. The river has gone out 45 feet in the last 5 months.

101 high school students and 8 chaperons were kicked off a flight from New Yorkto Atlanta. That much, both sides can't agree on, but the accounts of what letthis happen are where we are getting some very different stories.

It happened on an early morning air trend flight on Monday, before the planeleft ground. The Airline says the students wouldn't stay seated, some wereusing their mobile devices after being asked not to, and when the groupwouldn't follow the requests of the flight crew including the captain. Theywere asked to leave the plane.

One of the chaperons says everyone in the group listened when they were told tosit down and turn off their phones, although some of the students might have tobe told twice. Another chaperon said none of the students were specially loudor disruptive. The opinion of the students and the chaperons is that the flightcrew over reacted. The airline's view is that the group was violating safetyregulations.

Today's first Shout out goes out Mrs. Silvestre’s current events class at WestWarwick High School in West Warwick Road Island. The dinosaur triceratops livedduring what geologic period? Was the Cretaceous period, Paleozoic era, Jurassicperiod or Pleistocene epoch? You've got 3 seconds, go!

Triceratops are classified under the Cretaceous period, around 65 to 145million years ago. That's your answer and that's your Shout out.

Triceratops are believed to have been one of the last flightless dinosaurs.When you pictured one, you probably think of the three horns on its head orthat big bone on the back of the skull.

A rancher in Wyoming came across a lot more than just that one bone recently.The scientists whom he told about it say it's one of the complete skeletonsever found of triceratops. And it's not just one, three of them were foundtogether in one spot. That’s interesting, too. One researcher says before now,there wasn't much evidence that the triceratops moved in groups.

These dinosaurs were plant eaters, but they were targeted by hungry predatorslike tyrannosaurs and scientists say the bones indicate that the t-rex isprobably how these three triceratops died.

De extinctioning might not sound scientific but that's those who want to do it,call it. It's a movement to try to bring back species that humans help make extinctlike the dodo bird or Tasmanian tiger.

It's not known whether people had anything to do with the demise of the woolymammoth. But a recent discovery in Siberia has brought more weight to debateover de extinctioning.

The mammoth is so well preserved by ice that some scientists think they might beable to clone it. According to a professor at University of California, that'sone possible way to de extinct the animal: cloning takes the DNA from the extinctanimal cells creates an embryo, and has the similar living animal carry andgive birth to it. In case of mammoth, they probably use elephant.

Scientists tried this with an extinct type of ibex, a while back, it died justafter it was born. But some are awfully attempted to try again with mammoths.

It kind of brings back questions from Jurassic Park though. Even if thescientists could clone the extinct animal, it's not clear ethically if theyshould.

--As a scientist, I'm conflicted about whether we should or should not bringextinct species back to life. But it's hard to stop scientists and to startprogress, stop progress, and particularly when there is something that's cooland captivating of people's imagination as the opportunity to bring somethingback to life.

Critics argue that the extinct species were meant to be that way for a reason,and some biologists and wild life experts fear that if we the ability to clonewhatever goes extinct, we won't try very hard to preserve the endangeredspecies and threatened habitats we currently have.