A challenging brain teaser has sparked a viral craze online, testing math and logic skills. Discover the solution to the ...

In a new sign of toolmaking in marine mammals, orcas in the Pacific Northwest were recorded rubbing stalks of kelp against each other’s bodies, a study shows.

Scientists have found evidence of new brain cells sprouting in adults - a process that many thought only occurred in children ...

This picture puzzle is designed to test your observation skills and attention to detail. You will get 5 seconds to spot all 5 ...