From twinkling constellations to stellar life cycles, this starry skywatching quiz will test your cosmic knowledge.

New research complicates the old consensus that IQ is largely fixed, and that's good news for anyone looking to boost their ...

Average IQ varies depending on geographic location, resource access, and much more.

Psychologists administer IQ tests. Some psychologists don't test children younger than 4. Costs for testing can vary by the provider. Isla McNabb, a 2-year-old from Kentucky recently became the ...

Retirement can easily last more than two decades, which is why it takes saving and planning. It also requires at least basic retirement financial literacy. After all, if you don’t know when to collect ...