Photo: christine zenino/Flickr

Giant Canyon Discovered In Greenland

Longer than the Grand Canyon

Scientists researching climate change have inadvertently discovered one of the world's biggest canyons beneath the ice sheets of Greenland. Carved out by a river more than four million years ago, the hidden valley is 800 kilometers long and 800 meters deep, making it longer than Arizona's Grand Canyon.

“The Greenland and Antarctic ice sheets hide a lot," professor David Vaughan from British Antarctic Survey told BBC News. "It’s pretty surprising to find this canyon. Greenland isn’t that big for a canyon of that size, and for it to survive in its pre-glacial form after successive glaciations is quite something.”

Meltwater from the canyon still runs out to the sea, and glaciologists believe it plays an important part in transporting sub-glacial meltwater to the ocean. The canyon has never been seen by humans, and researchers believe that there may be bacteria trapped below the ice.


Nyad in Cuba suiting up for her 2012 bid     Photo: AP

Diana Nyad Making (Another) Attempt at Cuba to Florida Swim

Weather looks doubtful

Diana Nyad lands in Cuba today for her fifth attempt to swim from Cuba to Florida.

She wrote on her blog yesterday that the weather did not look favorable, but that she would persevere.

The weather forecast, seemingly perfect as of yesterday, is now turning against us somewhat. We will make final decisions once in Havana. On one hand, can't cowboy it up and go out in something truly undoable. On other hand, if not ideal and promises to be a bear of duress and rough seas, going to put my head down and press through.

Earlier this year, Nyad told us that she would "either going to die or make that swim."


Read more about Diana Nyad, one of our Adventurers of the Year.