Unfortunately for farmers, bee populations are under pressure, due to factors such as climate change, habitat loss and the use of pesticides. The European honeybee is also being badly affected by a parasitic mite called varroa destructor.
Based on a moshav, or collective farm, in central Israel, Mr Sade is the founder of tech firm BloomX. He says that the company has found a way to mechanically pollinate crops in a similar way to bees.
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