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Modern people who are obsessed with smartphones should be careful of this disease
For modern people, we cannot imagine a daily life without a smartphone.According to Gallup Korea's survey of 18-year-old adults last year, the usage rate exceeded 90% for the first time in 2016 and ...
Optical illusion: Only those with 20/20 vision can spot the odd elephant in just 3 seconds
Optical illusions have been a brain teaser enthusiast's pleasure for centuries, pushing the brain to process complex visual ...