Buried thousands of feet under Summit, the highest point on Greenland's ice sheet, is a soil born before humans ever walked on Earth.

About half of the surface warming that's helping shrink Greenland's glaciers is due to temperatures in the tropical Pacific Ocean.

The vast ice sheet covering Greenland could melt more quickly in the future than existing models predict.

Greenland is famous for its massive glaciers, but the region was relatively free of ice until about 2.7 million years ago.

The discovery of two large lakes hidden beneath Greenland's ice suggests that climate change now cuts all the way to the bottom of the ice sheet.

If you visit Churchill, Manitoba, you won't be bouncing around like you're on the moon, but its lower gravity is a scientific oddity.

Glacial gifts such as erratics, moraines, kettle lakes, cirques, tarns and eskers from the ice age are all around if you know where to look.

Humanity is not only moving too slowly in curbing CO2 emissions — we're moving the wrong direction.

These aerial images highlight the devastating effect global warming has on the arctic.

Designer Benjamin Jones wants to erect the Sustainable TreeHouse, an eco-friendly 'interactive playground' on New York City's Governors Island. But he needs you

A young New Yorker buys, via Craigslist, an uninhabited 91-acre island in Lake Superior with plans to create a small, sustainable artist residency while keeping

British artist Richart Sowa has taken more than 100,000 plastic bottles and built an eco-friendly Mexican getaway powered by energy from the waves and the sun.

Rabbit Island residency programs encourage artists to incorporate conservation, ecology and sustainability into their work.

The Nordic nation gets bookish at the 2018 Venice Architecture Biennale with an exposition dubbed 'Mind-Building'

Finland, the world's most literate nation, rings in its 100th birthday with the opening of Oodi Helsinki Central Library.

Check out this former industrial powerhouse's parks, markets and way-green baseball stadium.

Get out your walking shoes and check out this city by the sea.

Check out this low-key spot for a rustic, Deep South experience.

If your preferred mode of transportation is by horse or bike, this is the place for you.

Although only 22 miles away from L.A., Catalina is a completely different world.

Conservation plays a big part in the development of this laid-back island, where golfing, seafood and bird watching are top-notch.

Reykjavik, the pedestrian-friendly, geothermal-spring-heavy capital of Iceland is ideal for travelers who want to leave a light carbon footprint.

Despite a few setbacks, such as the 2004 tsunami and recent political unrest, Phuket remains Thailand's showcase tourist destination. Its palm-fringed beaches,

Prince Edward Island is Canada's smallest province in terms of area, but it is one of the country's most prominent in terms of tourism and the environment. Many

Malaysia's Penang Island is one of the most unique places to travel in Southeast Asia. As a beach destination, it pales in comparison to the region's best stret

The city of Auckland sits at the center of the largest metropolitan area in New Zealand. The nation is probably best known for its tradition of shepherding, for

Birmingham sits at the center of England's West Midlands region. Though it is not on many international tourists' radar, it is the second-largest city in the co

Jeju Island is not on many Western tourists' radar. This speck of land off the southern coast of South Korea is hugely popular amongst domestic tourists and is

Sardinia's true magic, especially from a nature-lover’s perspective, is its interior and its less-accessible sections of coastline.

Material from the Great Pacific Garbage Patch to be collected, melted down and rebuilt into a floating paradise for green tourism.

The great Pacific garage patch is giving sea striders a place to breed out on the open ocean, changing the natural environment there, new research suggests.

Tern Island is so besieged by garbage it may become the first U.S. hazardous-waste site whose main problem is plastic.

Divers scoured remote Pacific atolls to collect the garbage, some of which had entangled sea turtles.

By implementing 'housing first' on a national scale, Finland has almost eliminated homelessness.

By 2032, everything will on the Danish island of Bornholm will be recycled, repaired or reused.

SpaceX may try to make history with its next launch later this month, returning its rocket to a landing pad rather than an ocean-based platform.

The rocket's return even surprised SpaceX founder and CEO Elon Musk, who initially thought the Falcon 9 booster didn't actually stick its landing.

The InSight lander is equipped to study the Red Planet's interior in unprecedented detail.

U.S. landowners voluntarily protect more land (and water) than all national parks in the lower 48 states, a new census shows.

India's Chandrayaan-2 mission lander was lost on the surface of the moon, but now NASA officials have found its debris.

Humans have detected and confirmed seismic event son another planet. Here's what you need to know about "marsquakes" and what they mean.

Pearl Fryar has no horticultural training but his talent is apparent in the 300 sculptures at Pearl Fryar Topiary Garden in Bishopville, S.C.

Ecological landscape designer Jessi Bloom offers guidance in designing a yard that is healing for spirit and nature and creating sacred, meditative space.

Meanwhile in England, shopping basket theft is on the rise.

A river pollution clean-up project yields spectacular results in Rotterdam.

Thanks to an abundance of beech seeds, so far this year 150 orange-fronted parakeet chicks have been born in the wild in New Zealand.

Rescue workers swooped in and saved nearly 100 baby birds when tree in Oakland split and started to topple.

White ravens are spotted occasionally on Vancouver Island, but they don't seem to stay for long.

Hurricanes keep coming through, destroying homes and beaches, yet tenacious residents keep on rebuilding. While this endless process of destruction and construc

If you're dreaming of a white Christmas, these photos of snow-covered nature from all around the world might do the trick.