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Video: Obama addresses U.N. on climate change

President Barack Obama challenged world leaders to join the United States in fighting global warming. Watch the entire 10-minute speech here.



  • Climate & Weather

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Edward Norton named U.N. biodiversity ambassador

Actor/activist excited to use new role to share that 'human well-being is intertwined fundamentally with biodiversity'.



  • Arts & Culture

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UN: Clean water is a basic human right

The United Nations General Assembly has officially recognized access to safe, clean drinking water as a basic human right.



  • Wilderness & Resources

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Denver's bike-sharing program may be unconstitutional, says candidate for governor

Is Denver's B-Cycle program nothing but a form of U.N. control of the city? The Mayoral Republican gubernatorial frontrunner thinks so.




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Halloween fright: 7 billion humans

Earth has never hosted 7 billion people all at once before, but according to the U.N., it may reach that spooky milestone by the end of this month.



  • Wilderness & Resources

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Back to Brazil for World Environment Day

Forty years after the first World Environment Day, and 20 years after the original 'Earth Summit,' Brazil is still a flashpoint for environmental politics.



  • Wilderness & Resources

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Photos: Brazil faces eco-challenges ahead of Rio+20

More than 100 world leaders and tens of thousands of protesters will descend on Rio de Janeiro next week for the Rio+20 summit in hopes of overcoming years of d



  • Wilderness & Resources

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5 things you don't know about Gandhi

Here's a small birthday tribute to Mohandas Karamchand Gandhi, the "great-souled" man who was born 148 years ago today. It's a poignant way to celebrate the man




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U.N. considers banning thimerosal from vaccines

Health experts argue that banning the preservative could make it difficult for children in developing countries to get life-saving vaccines.



  • Fitness & Well-Being

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Mongolia's Gobi bear clings to existence

Mongolia, the host of this year's World Environment Day, is home to Earth's rarest bear. Conservationists hope 2013 will mark the start of its comeback.




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The best of the IPCC climate report leaks

Here is a sneak preview of what to expect when the AR5 report is issued next week, based on the leaks so far.



  • Climate & Weather

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4 things to know about the IPCC's climate report

The IPCC report is expected to include summaries on melting glaciers, sea level rise and the impact of human activities on the global climate.



  • Climate & Weather

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11 cultural traditions protected by UNESCO

UNESCO protects more than landmarks and culturally-significant sites. There are intangible parts of culture that are important, too.



  • Arts & Culture

b

Making over the nutrition facts label

A consumer advocacy group wants to make nutrition labels less confusing.




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17 food certification labels decoded

Consumers who need guidance about all the seals and certifications on food packaging can find some answers in this food label guide.




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17 food certification labels decoded: Nos. 9-17

Part II: Consumers who need guidance deciphering all the seals, certifications and claims on food packaging can find answers in MNN's Food Label Guide.




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Banana nutrition facts

The banana is perhaps the oldest recorded fruit in the world as well as the most consumed. But some dieters avoid bananas like a slippery peel. Are bananas unhe




b

The nutrition facts about tofu

If you're wondering if you should be eating more plant-based sources of protein such as tofu, here's the good and the bad about the nutrition.




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8 reasons to appreciate nutrition-packed strawberries

Strawberry nutrition facts. You probably know these berries pack a vitamin C wallop, but there's a wealth of other good stuff inside including fiber, manganese,




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3 nutrients linked to a better night's sleep

Many common sleep problems can be remedied by small, but specific, changes to nutrition.




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Food 'score' labels could inspire healthier choices

Health ratings on packages could influence consumers' purchasing decisions and drive food companies to make healthier products.



  • Fitness & Well-Being

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How to read nutrition labels

Understanding what you are eating is a crucial step to healthier living. But what do all those food labels really mean?




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Can you eat your way to beauty? A new book says, 'absolutely'

“Eat Pretty” has simple nutrition information to transform your beauty routine – inside and out.




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Beet juice is the secret to your best run

This powerhouse veggie includes compounds that will enable you to run further — but incorporating it into your diet should be done carefully.



  • Fitness & Well-Being

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Why you should sip homemade bone broth every day

Bone broth is nothing new, but it’s suddenly very popular to have a daily mug's worth. Here’s why.




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Dig out your potato masher. You're now allowed to eat more starchy vegetables

The Institute of Medicine has raised the amount of potatoes, corn and peas it recommends you eat each week.




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Eat This Much creates meal plans for your body, your schedule, your goals

Clever website factors in diet goals, body type and food preferences to create a weekly meal plan that makes sense.



  • Fitness & Well-Being

b

What if nutrition labels had pictures?

If we could see a photo of the amount of sugar that's in a soft drink right on the label, would it make us think twice?




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Can traffic lights help us eat better?

Researchers add color-coded traffic symbols along with calorie counts to a menu to see how they influence people's choices.




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5 health benefits of fresh cranberries

How healthy are all those cranberries you’ll be eating during the holiday season? You’ll like the answer.




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Are brown eggs healthier than white eggs?

How healthy is that egg? Lots of factors are involved, but the color of the egg shell isn't one of them.




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5 vegetarian breakfast foods that keep you full until lunch

If you're trying to stave off the mid-morning munchies, these foods will satisfy both your taste buds and your appetite.




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With its formula change, Nutella is not bringing 'more happiness to the world'

Did Nutella, the tasty chocolate hazelnut spread, really need more sugar?




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I tried Starbucks' Christmas Tree Frappuccino

Starbucks will be selling its Christmas Tree Frappuccino only until Dec. 11.




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5 high-fiber foods you should be eating

Fiber is essential to a healthy digestive system. Find a place for these high fiber foods throughout your day and you'll get plenty.




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Does it really make a difference if you tear or chop vegetables?

If you want to get the most nutrients out of your veggies, don't worry about gaining polyphenols or losing nutrients. Just eat them.




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5 nootropic foods to boost brain function

You can get all the brain-boosting benefits from these nootropic foods instead of taking supplements, which aren't regulated.




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Food pyramids change with time and place, but the goal is the same: Eat well

Colorful diagrams help us understand how much of which foods we should be eating.




b

Snuggling with baby penguins and other perks of being a wildlife photographer

Sue Flood's new book on emperor penguins, 'Emperor: The Perfect Penguin,' is the culmination of 9 years of work.




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This beautiful photo of the moon is 50,000 images rolled into 1

Astrophotographer Andrew McCarthy spent hours creating this breathtakingly detailed composite image of our moon.




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Sony photography competition celebrates diverse cultures and lands

This year's open category winners of the Sony World Photography competition range from a Chinese shadow puppet show to a mesmerizing underwater dance.



  • Arts & Culture

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Bird Photo Booth captures birds at their finest

Michigan woman has a 'photo booth' to get a glimpse of the personalities of birds that visit her yard.




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Kenya's 'Elephant Queen' immortalized in remarkable photographs

Photographer Will Burrard-Lucas's new book 'Land of Giants' chronicles some of the last days of this towering gentle giant.




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Image Awards celebrate the beauty of invisible biological worlds

Annual Koch Institute exhibition explores the thought-provoking and stunning visuals behind life sciences and biomedical research at MIT.



  • Arts & Culture

b

This man's love affair with icebergs will warm you on the inside

No one gets more excited about iceberg season than camera-toting Canadian Mark Gray.




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Remembering Apollo 11 and the giant step that changed everything

It's been 50 years since the Apollo 11 mission and the first step on the moon. Here's a look back in photos.




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Brilliant things happen when science and photography collide

Science Photographer of the Year contest highlights how photos can open a window to science.




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Photographer spots rare polka-dotted zebra

Photographer Frank Liu captured photographs of a polka-dotted zebra in Kenya that ended up published in National Geographic.




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Polar bear photos 'testify to the beauty of this fragile world'

Wildlife photographer Michel Rawicki captures polar bears in their private moments.




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9 wild videos of polar bears

As polar bears struggle to survive in the fast-changing Arctic, MNN presents a tribute to the animals' legendary power, precocity and perseverance.