Modern research echoes Adler’s theses. In simple terms, siblings differentiate themselves to reduce direct competition. If ...

There's a line of thought that equates intelligence with “pattern recognition.” How do you stack up on this unique cognitive ...

Which of the earth's three layers is the hottest? What does a light-year measure? Who developed the polio vaccine? A just-released survey from the Pew Research Center finds Americans' grasp of common ...

Scientists researching primates, called "primatologists," have learned a lot over the years about our closest evolutionary ...

What’s a cell? An organelle? A ganglion? An acromion? Eighth grade biology is gross anatomy and basic physiology. It’s systems, organs, and connecting the dots between what happens in your head and ...

From ancient philosophers pondering the stars to modern scientists scanning distant exoplanets, humanity has long asked one haunting question: Are we alone? When you purchase through links on our site ...

Long before modern telescopes, early astronomers mapped the heavens with math, myth, and sheer curiosity. This crossword quiz celebrates the minds who first charted the cosmos.

Why did Earth shake for nine days? Which rich guy paid a fortune for a dinosaur? And did someone finally locate Amelia Earhart’s airplane? Test your memory of some of the stories that intrigued, ...

True or false questions sound easy - until they’re not.This quiz pulls facts from science, history, pop culture, math, and ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

Before you read the report, test your science knowledge by taking the interactive quiz. The short quiz tests your knowledge of questions recently asked in a national poll. After completing the quiz, ...