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Science Insider Explains answers your burning questions about everything science, from space and health to animals and nature. Watch to find out why babies can't drink water or why cockroaches are so hard to kill.

Cities in China are generating more food waste than they know what to do with. They welcomed one billion cockroaches to eat away the problem.
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Why China Is Raising Billions Of Roaches

One billion cockroaches are tackling China’s food waste problem.

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