A tricky brainteaser involving math that asks people to count the number of cubes on a trailer has left the internet baffled ...

Can you solve this rollercoaster brain teaser? Only high IQ minds can guess who's at risk of falling first. Test your skills!

Parkinson's disease and ADHD are genetically linked, finds a brain study that could provide a roadmap for future treatment.

Optical illusion puzzles assess intelligence and observational skills. Spotting a cleverly hidden deer within eight seconds ...

An umbrella is hiding expertly in the forest. Only sharp-eyed readers can spot it in 7 seconds. Are you one of them?

IF you think you’re an expert puzzle solver then try and spot the seven hidden animals blended in among the huge polar bear.