Researchers from Harvard University have created the world's smallest robot, which was inspired by the biology of a fly, has two translucent wings and weighs a fraction of a gram.

Dr Kevin Ma and his team, led by Dr Robert Wood, announced the first controlled flight of the robotic insect, establishing the culmination of more than a decade of work.

"This is what I have been trying to do for literally the last 12 years," explained Wood. "It's really only because o...

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