भिडियो हेर्न तलको बक्सभित्र किल्क गर्नुहोस
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Chiranjeevee Pokhrel for DCnepal, Jan 24, 2016 - The world famous Physicist Stephen William Hawking has said that there is crisis over mankind due to Nuclear War, Weather Change, and Nuclei generated Viruses. The daily advancement of science and technology has added the risk, according to the Physicist Hawking.
भिडियो हेर्न तलको बक्सभित्र किल्क गर्नुहोस
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