TechnologyScreen time: How smartphones really affect our bodies and brains If you believe the headlines, screens are supposed to warp our skeletons, damage our mental health and alienate us from our families. But the evidence paints a more nuanced picture Features
HealthGel that makes teeth repair themselves could spell the end of fillings Applying a gel to damaged teeth stimulates the enamel to re-grow – a finding that could stop people from developing cavities that must be drilled and filled ¿ìè¶ÌÊÓÆµ