Health
Stem cell brain injections let people walk again after stroke
People once confined to wheelchairs because of stroke showed improvements in movement and speech with the help of stem cells injected into the brain
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People once confined to wheelchairs because of stroke showed improvements in movement and speech with the help of stem cells injected into the brain
Small, armed drones that look like insects or birds could hold territory in war zones, without the need for troops on the ground, says David Hambling