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The nuclear crisis in japan is raising safety concerns around the world. information from inside the fukushima daiichi plant is needed, but radiation levels pose a risk to human lives. so theyre turning to robots for help. >> and theyre using them for the incident right now. we can send in these robots and get a good initial assessment of what is the situation, is it safe for people to go in? >> reporter: two different robots have been sent to japan. one travels by air. one by land. theyre equip...