Hi there, I'm Ricky from the BBC World News for Schools. It's Tuesday the 15th of March.
A third blast at Japanese nuclear plant.
And the latest on how beaked whales are affected by sonar from navy ships.
But first - there's been a third explosion and a fire at the Fukushima nuclear plant damaged by Friday's earthquake in Japan. The government there has warned that there may be radiation levels that could make people sick. The Prime Minister's spokesman gave advice about who should move...
CLIP: "We have decided that the 20 kilometre radius is the area to evacuate and those between 20 kilometre and 30 kilometre are requested to stay inside this morning. So we think that by taking these measures the residents will not suffer from significant health damages."
The explosions happened because the earthquake broke the reactors' cooling systems. Experts are trying to stop more damage by flooding the nuclear reactors with sea water. At the same time, rescue workers are struggling to cope with the massive destruction caused by the huge earthquake and the tsunami.
To Bahrain now in the Middle East where the government is bringing in troops from neighbouring countries to help them cope with anti-government protests. Troops from Saudi Arabia and the United Arab Emirates have arrived in the country in tanks. Officials say their job is to protect Bahrain's most valuable resources from the protests. The troops have been called after one of the worst days of violence since they began, with dozens of people being injured in clashes with police.
Next - tickets for the London 2012 Olympics have gone on sale, 500 days ahead of the event. Around 6.6 million tickets are available to buy over the next six weeks. Prices go from £20 up to £2012. Organisers say they'll decide who gets to go to the really popular events by using a special ballot. Even athletes, like swimmer Rebecca Adlington, are excited...
CLIP: "...Just if I can make it and just be there as an athlete, it would be so exciting. The whole country's buzzing about it, not just us athletes."
Now to the latest evidence that beaked whales can be thrown off course by naval sonar. Researchers reckon that the animals really don't like the strange sound that the navy use to communicate. So much so, that they fall silent. That's important, because it's thought the clicking and buzzing sounds the animals make help them navigate - if they can't navigate they can end up stranded. Here's a recording of the whales as they stop clicking and buzzing when the sonar signal broadcasts...
CLIP: WHALE AND SONAR SOUNDS
And for today's question - what are beaked whales the best in the world at? Here's a clue - they can do it for 20 to 30 minutes at a time.
Yesterday we asked you who wrote the children's book Fantastic Mr Fox. And the answer is.... Roald Dahl.
That's all from the World News for Schools team. We're back tomorrow.
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