American psychologist Joseph Jastrow made this illusion in 1899 – to make a point about how the brain perceives what is in ...

A dog hid in plain sight in a snowy scene, leaving Reddit users puzzled as they tried to spot it in this optical illusion.

Test your observation skills with this engaging optical illusion set on a football field! The challenge involves spotting three hidden mistakes within an image filled with all red and white footballs.

Test your cognitive skills with this quick IQ challenge! The image presents a seemingly normal windy day at the park, but a ...

Key Takeaways Offline games are perfect for places with weak or no internet, such as flights, road trips, or remote areas.

Besides the pattern, bowtie snakes also have an uncommon scale texture that feels almost velvety. This texture is rare among ...

New summer reading from Duke authors includes timely books on race, history and political polarization, useful books on finance, health and mentorship and good reads of poetry and fiction. Plus: for ...