There's a whole medicine chest in the garden. Do you know which plants to use for what ailments? Test your holistic herb wits here.

How much do you really know about the ground under your feet? Test your knowledge with this quiz.

Take the tail end of a hint and see if you know the answer!

How well-versed are you with our planet's fascinating geology? Test your knowledge and find out.

There are those of us who aced AP calculus, and there are those of who can't figure out the tip. Take our quiz to find out just how much of a math whiz you are.

You say 'please' and 'thank you' and don't talk with food in your mouth, but how much do you know about minding your manners?

There's no confusing a giraffe baby with any other creature. But some animal infants don't always resemble their parents.

Not all penguins make their home in icy Antarctica. See if you know where in the world to find these penguin species.

These iconic pink birds are immediately recognizable, but how much do you know about them? Test your knowledge of these beautiful birds!

Life across the globe depends on bees, butterflies, birds, bats and other pollinators. Test your knowledge about these vital creatures.

From spring showers to summer thunderstorms, rain can fall any time of year. But how does it work?

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

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?

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?

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

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.

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.

Answer 20 questions to get your resiliency score -- and find out how self and community-sufficient you are.

Web site and mobile app help you find the lowest gas prices in your area.

Renewable energy is a powerful force for the decentralization of Big Energy (and Big Government). It's odd that it isn't more popular in supposedly 'radical' an

Here's a good list of items not to put in your garbage disposal, and a bonus list of 3 to be cautious about.

There's no perfect way to dispose of your dog's waste, but here are some ideas.

Moose are increasingly unleashing their frustrations on hunters, motorists and lawn mowers.

The newly identified species weaves silky air chambers to survive high tide.

We often hear about the negative impacts of stress, but some stress is necessary — and even healthy.

Psychologists and scientists are concerned about the rising rates of suicide among children, and what the shrinking gender gap might mean.

A colorful oath or spirited expletive can heal the body and soul. (We have the science to prove it.)

A few hacked e-mails does not overturn the mountain of science behind global warming, and if you think otherwise you're either coldly disingenuous or informatio

New flexible glowing sheets are inexpensive, easy to recycle, and could someday replace lightbulbs and OLED technology.

Ann Louise Gittleman offers '1,268 Ways to Outsmart the Hazards of Electronic Pollution'

Technology may be drastically changing each year, but there are a few older gadgets you can still buy without regretting your decision later.

Anyone in the U.S. can buy Google Glass starting at 9 a.m. ET on April 15 through the Explorer program – but spaces are limited.

Do energy vampires haunt your living room? Find out if you are electricity-savvy with your entertainment devices.

Even though native bees don't produce honey, they're incredibly important, says author Paige Embry. She explains how to help them in "Our Native Bees."