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Mercury's water ice bodes well for alien life search

The discovery of huge amounts of water ice and possible organic compounds on the heat-blasted planet Mercury suggests that the raw materials necessary for life




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NASA video shows Mercury like you've never seen it

Spliced from thousands of screenshots of the planets, NASA has created a new video of Mercury that shows off the planet's diversity in terrain.




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Whale ear wax (you heard that right) carries a lifetime of ocean pollutants

By analyzing ear wax from a deceased blue whale, scientists gained clues to years of chemical exposure.




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How to see Mercury and 2 comets in the pre-dawn sky this week

This week in the hour before sunrise early morning stargazers will get a double treat: the planet Mercury and two special comets.




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How to see Mercury in March's morning sky

For the next few weeks, about half an hour before sunrise, Mercury will peek over the southeastern horizon for observers in the northern hemisphere.




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Why is the already tiny planet Mercury shrinking?

The surface of Mercury is shrinking faster than previously thought, photos from a NASA spacecraft orbiting the tiny planet reveal.




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NASA's space tourism posters will make you want to explore the galaxy

The dream of a space-faring humanity is deep-rooted.




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How well do you know American cars?

This devilishly difficult quiz will separate the auto experts from the pretenders.




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What's your cleanliness IQ?

How smart are you when it comes to keeping clean and germ-free? Take our quiz and find out.




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How much do you know about the birds and the bees?

Test your knowledge of the wild world of animal mating.




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How much do you know about pandas?

From what they eat to wear they live, test your giant panda knowledge with this quiz.




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How smart are you about crows and ravens?

Crows and ravens are some of the smartest animals on the planet. So what do you know about them?




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How well do you know birds?

Whether you watch them at your backyard bird feeder or just see them when you're hiking, how much do you really know about our feathered friends?




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How much do you know about your kidneys?

What do you know about your kidneys? They don't get the acclaim of the brain or the heart, but these small organs work nonstop to keep your body healthy.



  • Fitness & Well-Being

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What do you know about human evolution?

Let's see how well you know your own species' family tree.




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How much do you know about frogs?

Test your knowledge about frogs and toads with this quiz.




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How much do you know about the beach?

You go to the beach to relax and soak up the sun. But how much do you really know about the waves and the sand?




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How much do you know about turtles?

How much do you know about these ancient shelled reptiles?




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What does your handwriting reveal about you?

Want to delve inside someone's subconscious? Graphology might hold a key.



  • Arts & Culture

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Which celebrity is this species named after?

Sometimes scientists infuse some pop culture into their species names. Can you match the celeb to the critter?




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How much do you know about ice cream?

Before you scoop up your next bowl of ice cream, test your knowledge about everyone's favorite summer treat.




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What are these countries best known for?

Due to history or legend, most countries are known for contributing something specific to the world. How many do you know?



  • Arts & Culture

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How much do you know about your eyes?

They help you see the world, but how much do you really know about the windows to your soul? Test your knowledge.



  • Fitness & Well-Being

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How much do you know about caffeine?

Can you live without your morning coffee or afternoon soda? See how savvy you are about your daily buzz.



  • Fitness & Well-Being

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How much do you know about nightmares?

When your head hits the pillow at night, do creatures lurk? See how much your know about terrifying dreams.



  • Fitness & Well-Being

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How much do you know about herbal remedies?

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.



  • Fitness & Well-Being

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How much do you know about dirt?

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



  • Organic Farming & Gardening

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Think you know rocks, minerals and gemstones?

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



  • Wilderness & Resources

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What color is this cat's coat?

Our feline friends come in many colors and coat patterns, each with a name. How many do you know?




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Is there an Oscar for knowing Oscar trivia?

If you find yourself glued to the TV when the Academy Awards roll around each year, this quiz might be your chance to shine.



  • Arts & Culture

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How good are you at math?

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.



  • Arts & Culture

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Can you guess where these penguin species live?

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




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What do you know about flamingos?

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




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How much do you know about birds and bees (and other pollinators)?

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




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How much do you know about rain?

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



  • Climate & Weather

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How much is that famous painting really worth?

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



  • Arts & Culture

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How were these iconic landforms created?

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?



  • Wilderness & Resources

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Some animals have Superman-like senses. What do those senses do?

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




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Are you polite enough to eat around the world?

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




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How much do you know about bison?

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




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How much do you know about coral reefs?

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



  • Wilderness & Resources

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Can you ID these lesser-known dog breeds?

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?




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Do you know these new words?

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



  • Arts & Culture

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What do you know about sheep?

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




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Do you know your calendar trivia?

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



  • Research & Innovations

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What's the most likely way to die?

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.



  • Protection & Safety

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Test your Nobel knowledge

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



  • Research & Innovations

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What do you know about fall?

Test your knowledge of all things autumnal.



  • Climate & Weather

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Trust your gut: How much do you know about the bacteria that live inside 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?



  • Fitness & Well-Being

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Lying 101: How much do you know about the science of stretching the truth?

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.



  • Arts & Culture