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The week's science news with Dr Chris Smith and the Naked Scientist team. This week:

How close are we to being able to grow complete new arms and legs? New research looks very promising in this direction. And a breakthrough in sight restoration: we take a look at the patient who鈥檚 received a bionic eye

Plus, in the wake of Covid-19, millions of people have suffered smell and taste loss; for some it鈥檚 never returned, and others are left living in a world that doesn鈥檛 smell, or taste quite right; how can we help them?