See if you know the difference between a bedbug, a beetle and these other creepy-crawlies.

When a painting sells for a jaw-dropping price, it makes headlines. Do you know how much these works of art went for?

They're massive, they're all-natural and, in most cases, they're millions of years older than we are. So how were these amazing landforms created?

Animals use their senses to detect other animals, communicate and do some wild things. Can you identify the super senses of these animals?

Different countries have different dining customs. Do you know how to avoid being offensive at the dinner table, no matter where that table is?

Bison have been named our new national mammal. Test your knowledge of this species that's so critical to North America's ecology.

These unusual creatures are stunningly beautiful and surprisingly important to life on Earth. Show us what you know!

Step aside, retrievers and beagles, and let these rare dogs trot into the spotlight. From Pulis to Leonbergers, how much do you know about these breeds?

The online dictionary Dictionary.com added a number of popular words culled from headlines and social media. Can you define them?

Sheep provide us with meat, clothing and even scientific illumination, but how much do you know about them? Find out with this quiz.

We use calendars to keep track of our days, our weeks and our years. But how much do we really know about them?

We're surrounded by any number of dangers, but which ones should you really worry about? Take the quiz to find out what's more likely to summon the Grim Reaper.

Nobel by the numbers: How much do you know about the history of the Nobel Prize? Take the quiz.

Test your knowledge of all things autumnal.

A lot of faulty survival information gets passed around. Can you sort out which actions will save you, and which might kill you?

Bacteria live everywhere in your body, including your gut. These microbes have quite an impact on your health. Do you know what they do?

Whether it's a white lie or a whopper, fibs are part of our daily lives. We like to think we're honest but, well, we're not. Test your falsehood expertise.

The Earth's mountains, rivers, animals and rocks have been around for millions or billions of years. Do you know which ones have been around the longest?

Dogs have incredible senses and are like superheroes on four legs. Take this quiz to test your canine know-how.

National Park and Earth Week are right around the corner — see how much you know about our nation's protected areas.

From the cheetah to the hare, so many creatures are wickedly quick. Test your trivia smarts on what makes them so swift.

Whether you're crying tears of joy or crying over spilled milk, how much do you really know about the tears rolling down your face?

Lightning is more than just a stunning spectacle. Take our quiz to see how much you really know about this electrifying natural wonder.

Think you know everything about that special day of scary movies and sugar highs? Test your Halloween smarts ... if you dare.

You use pasta in sauce, in soups and in salads. But do you know the names of the different pasta types?

It's time for some healthy change. Here are some fundamental truths you need to know about diet, exercise and other wellness goals.

Sure herbs and spices taste wonderful, but do you know what benefits they provide to your body?

When the going gets tough, some animals get going — to bed. Take our hibernation quiz to see how much you know.

Every two years, the National Science Foundation asks 10 questions to see how much Americans know about science.

A student's desperate plea on a bathroom wall is met with powerful messages of support.

To stimulate the appetite, try a glass of homemade vin de citron or vin d'orange.

Julia is part of Sesame Street's campaign to help kids with autism feel loved and accepted.

Some think Jane Austen, the beloved author, may have been offed.

'Mobitecture' features portable works of architecture including campers, floating cabins and trampoline tents.

In Stranger in the Woods, author Mike Finkel explores the famous Maine recluse Christopher Knight and why he stayed alone for 27 years.

Paul Hawken's latest book, 'Drawdown: The Most Comprehensive Plan Ever Proposed to Reverse Global Warming,' focuses on fixes rather than fighting.

A new study says historic smells are part of our 'cultural heritage' and should be saved to bring the past to life.

These feared and beloved predators are arriving on coffee tables, thanks to famed National Geographic photographer Brian Skerry.

Wine and food lovers can travel vicariously through these 4 books that are more memoirs or essays with food as the focus.

"Psychomachia," a medieval epic poem, may be the first, and certainly most brutal, comic book.

A new book, "Popular: The Power of Likability in a Status-Obsessed World," suggests that status matters throughout life, not just in high school.

Judith Jones, the editor of 'Mastering the Art of French Cooking' who had a knack for knowing what would sell big, has died at age 93.

Two new books will commemorate the 20th anniversary of the publication of the first 'Harry Potter' book.

The digital age isn't making libraries obsolete; it's making them more important than ever.

Stephen Ritz, author of 'The Power of a Plant,' developed a curriculum for indoor gardening that is changing lives and improving schools.

Ecologist Chris Thomas, author of 'Inheritors of the Earth,' asks readers to look at what we gain through environmental losses.

Reading novels has all kinds of benefits for the mind — and maybe even the spirit.

A new baby has been keeping the author of "Good and Cheap" busy, but Leanne Brown is looking ahead to how she can inspire people to eat well next.

In his book, "Endurance," astronaut Scott Kelly lays bare the highs and lows of living through NASA's longest single spaceflight.

Should baby boomers be blamed for stealing our kids' futures? Author Bruce Gibney thinks so — and he has a point.