She points out that blockchain-based tracking of a food at each point in the supply chain might be feasible for a product like South American bananas, but isn't feasible for a lasagne containing 50 ingredients from all over the world.
In May last year, the 64-year-old announced she had diagnosed with stage four Mantle cell lymphoma, a "fast-moving" form of blood cancer.，更多细节参见51吃瓜
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"At the end of the day, oil and gas companies have to deliver value to shareholders," he says. "They have very good managers. You can build anything, as long as you can pay for it.