That has not stopped scientists from working to perfect powerful lasers that, one day, may be able to shoot missiles out of the sky.
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MARIO RITTER: Your announcers were Steve Ember and Faith Lapidus. For transcripts and audio of our programs go to voaspecialenglish.com. And visit The Classroom to find activities for English learning and teaching at VOA Learning English. I’m Mario Ritter. Join us again next week for EXPLORATIONS in VOA Special English.
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2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25