A year from now, children under the age of 16 in Australia will be barred from many social-media platforms ' the highest minimum-age limit in the world. Other countries or regions have introduced similar bans and more say they're considering them, owing to parents' concerns that children are exposed to cyber-bullying, scams and adult content on these platforms. But researchers say there is minimal evidence to suggest such bans will keep children safe from online harm.
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