Volcanic rocks discovered by Nasa’s Perseverance Mars rover on the floor of the Red Planet’s 3.7-billion-year-old Jezero Crater are offering a tempting clue to how the Martian climate evolved. Energy crisis: Russia burns gas off as bills rocket. Scientist on possible human future for organs grown from mouse stem cells. SpaceX and T-Mobile satellite plan to kill off world’s mobile ‘dead zones’. International Dog Day: Walkies help fight canine dementia. Is Samsung Galaxy Z Flip 4 worth buying - and how long might it last? Good night’s sleep link to reducing stroke risk. Did seven-million-year-old human ancestors walk on two feet?
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