A US study has reignited debate over the widespread practice of adding fluoride to drinking water. Read more at straitstimes.com.

Not all minds are wired the same. Some people can instantly recognize hidden details, while others get tricked by illusions.

Did you know that your ability to spot hidden objects quickly is linked to intelligence? Research suggests that people with ...

PUT yourself to the test with this geography-themed puzzle designed to have you stumped. Players are challenged with spotting ...

A recent systematic review and meta-analysis suggests that more exposure to fluoride may be linked to lower intelligence ...

Can You Spot the Hidden Cat in 5 Seconds? Optical illusions with hidden images are a fascinating way to test your IQ, ...

HERE is another fun brain teaser to test your eyesight and powers of logic. Everyone can see the ice skater on the rink – but ...

Test your IQ and observation skills with this optical illusion puzzle! Spot the hidden frog among the leaves in just 5 ...

A high-IQ person listens to their intuition as a guiding force. Their sense of self-trust comes from honoring their beliefs ...