विश्वकै दिमाक खराब गर्ने यी यस्तो खतरनाक हतियारको आविस्कार भयो

भिडियो हेर्न तलको बक्स भित्र किल्क गर्नुहोस

This list takes a look at some important and well intentioned inventions that eventually ended up causing catastrophe through environmental damage or loss of life. All of the inventors were honest scientists who were trying to improve the world, but unfortunately ended up doing quite the opposite. This list is in no particular order. This list takes a look at some important and well intentioned inventions that eventually ended up causing catastrophe through environmental damage or loss of life. All of the inventors were honest scientists who were trying to improve the world, but unfortunately ended up doing quite the opposite. This list is in no particular order.

भिडियो हेर्न तलको बक्स भित्र किल्क गर्नुहोस