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Researchers say they have found the way to the future and the age of renewable energy sources. in a former mining tunnel under a mountain in the tichina region of switzerland they have developed a new method of storing energy compressed air. do the mirror and think the tans our idea requires a pressure chamber. and we were granted access to this tunnel. it was the perfect solution. using the mountain as a pressure reservoir to store all the energy you could you know. this is how it works using surplus electricity air is compressed in a cavity the pressure reservoir the compressed air can be re...

This site cleaned off, rebuilt and rebirthed. we've been working with all of the folks. the bottom line is -- the most important thing today is the refocus on our resolve, calling on the higher power to have the strength to go through what's going to be many months of rebuilding here in joplin, missouri. and a mud slide has left a gaping hole in a neighborhood just outside of st. louis. take a look. it gave way. the hole opened up about 100 feet wide and 100 feet deep. that is huge there. the fire chief in alton, illinois, suspects an old mining tunnel collapsed. but miraculously, no one was...

you're in the "cnn newsroom." this is sunday, may 29th on this memorial day weekend. i'm fredericka whitfield. one week ago a tornado pack 2g 00 mifrp winds ripped through the city leaving at least 142 people dead and hundreds more hurt. >> numbers continue to rise. this isn't about a scoreboard. those numbers have far exceeded what never had ever hoped for and far exceed all the tornados in our country. today we bring everyone together go focus on it and inspire others to come together as the they have here. >> we'll hear from both the president and the govern right here on cnn. l...