Cooling Challenge News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Want to take you to japan, where there's a zblimglimmer of news. workers plugged a hole spilling radioactive was north ocean but the prime minister warns this is not a time to be on mystic, he says. engineers are scrambling to stop another hydrogen explosion by injecting nitrogen gas into the reactor container. charles hadlock from tokyo, closely following today's developments. good day. with the plug now, does this help the cooling challenge that you and i have been talking about for so many weeks now? >> reporter: yes and no. yes, it stops the pleau of radioactive water reaching the pacific ...

Challenge? >> from what i saw they had brought portable power in, so they'll continue in this vein until they get more power in. without any power at all, the next challenge wouldn't come for, oh, a day or two anyway. >> help the lehman who doesn't understand how this works. when there's an earthquake, there's a trigger. they're automatically shut down. then if you lose power, describe the cooling challenge essentially and the fact of how hot the core would be and what -- why it's so important to cool it down. >> the reactor core when the chain reaction stops, the pieces that are split atom ar...