Madeleine Finlay sits down with science editor Ian Sample and science correspondent Nicola Davis to discuss three eye-catching stories, including the impact of a powerful psychedelic on depression, answers on the death of Russian opposition leader Alexei Navalny, and an explanation to the mystery of why humans have chins
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She is now facing calls to pause a government plan to scrap the lower minimum wage for 16 and 17 year olds, as some employers are saying it will make it too expensive to hire young people.
Its large solar arrays will generate all the electrical power for the craft, she adds.