The U.S. tradition began in 1911, but many other cultures offer their own twist on the Mother's Day theme. Mexico's celebration in particular looks like fun.

EPAcoal.org launches a Twitter campaign to send a strong message of support to the EPA for regulating toxic coal sludge so it doesn't enter the water supply.

Your body clock influences what time of day you burn more calories.

This is what the skies over Beaumont, Texas, look like whenever one of the local refineries loses power.

A new study by WHO finds that air pollution has worsened since 2011, signaling increased health risks for city dwellers.

Preference for "cleaner" male trees and plants in urban settings may trigger extra sneezing and wheezing. That's botanical sexism, says Thomas Ogren.

Here's a graphical glimpse at America's most endangered wildlife, where they live and how many are left.

Mankind does some weird things to save animals from extinction.

Endemic species run a higher risk of extinction because of their geographic isolation.

New study from Australia suggests resurrection of extinct species could lead to a loss in overall biodiversity.

Here are the world's rarest animals, the loneliest creatures on Earth: 8 species with fewer than 10 confirmed individuals left alive.

The Jambato harlequin frog had been feared extinct for at least the last 30 years.

BirdLife International has confirmed the extinction of eight bird species, including the Spix' macaw in Brazil.

Humans have driven almost 600 plant species extinct since 1750s and that number is likely much higher.

There were so many adorable puppies entered in the Green Dog of the Year Contest, that we couldn't resist! Here's a gallery of 10 green puppies.

Fans of Mother Nature Network's Facebook page can win a box full of green, limited-edition Ball® canning jars and much more.

For the Fourth of July, try this cocktail made with an American bourbon and blueberries.

Low-calorie cocktails abound, even if they're not labeled as such. The key is knowing the amount of alcohol and sugar in what you're drinking.

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

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

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

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.

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

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.

OPT harnesses ocean power with some bright yellow buoys (VIDEO).

When the Winter Olympics wrap up, Vancouver will be passing more than one torch. The city could light the way for green cities of the future by proving economic

If fracking techniques pollute water supplies, what will happen to beer production?

Malaysia and the Philippines are forcefully rejecting trash from wealthier countries.

The Bramble Cay melomys lost most of its habitat to rising sea levels.

Certain scents can cause a rush of feelings — even if you don't always remember why.

Dell makes recycling its old laptops fairly easy, but most companies make it tough for customers to return no-longer-usable electronics for safe disposal.

A new style of tiny lithium battery that can charge wirelessly could help make cyborg grafts an imminent reality.

Cozy up over the holidays with one of these seven throw blankets for around the house made from a variety natural and renewable fibers.

With so many organic companies owned by large corporations, some of their profits may be used to fight Proposition 37 – which would require genetically modifi

Chilly today? Crank down the thermostat and break out that hoodie — a versatile staple that can help you save a few bucks on wintertime heating bills.

Fall allergies always seem to pack a wallop. Here's how you can find relief.

Meanwhile, a new Bayer-funded study disputes that its pesticide is killing bees.

Try these simple tips and bid goodbye to houseflies, those uninvited pests buzzing around your home.

Right now, we basically build cities in a way that worsens flooding events, but nature has solutions.

Pants to Poverty's ruched panties promise fair trade premiums for cotton farmers and workers -- and slimmer-looking derrieres for wearers.

This recipe for traditional Peruvian Alfajores gets a non-traditional twist with the addition of quinoa. It's a great recipe to make with kids for Mother's Day.

From people to gadgets to gardens to food, here’s what I liked best in 2010.

In less than 2 minutes a day, you'll learn 101 (no, make that 202) things about Philadelphia that the tourism company wishes you knew.

It’s been fun to explore the gluten-free world in Portland, Oregon. Here are some of my favorite finds so far.

From Wattio to the Soccket ball and more, crowdfunding sites Kickstarter and Indiegogo helped these startups find fundraising success.

A major study finds a lot of people are clinging to memories that didn't actually happen.

Bill and Melinda Gates outline global-aid myths: poor countries will always be poor, foreign aid is a waste, and saving lives will lead to overpopulation.

There are a few things you can do to wake up a mind that still wants to sleep.

New survey finds that as the U.S. economy worsened, vasectomy rates increased.