HealthDoes limiting social media help teens? We'll finally get some evidence A trial will finally reveal whether limiting the time teens spend on social media really does affect their mental health Analysis
LifeBird retinas work without oxygen, and now scientists know how The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a flood of sugar, and this may have evolutionary benefits ¿ìè¶ÌÊÓÆµ