Glaciers

In what appears to be a historic first, a chicken sandwich was successfully carried to the edge of space today aboard a high-altitude balloon.

Thanks to rising temperatures, glaciers in Greenland are melting faster than scientists previously thought — and a new NASA video shows how researchers are tracking the feet per day of changes.

The Barents Sea near Svalbard is dotted with seafloor craters created about 11,600 years ago by methane hydrate eruptions.

Giant sediment ridges about the size of the Eiffel Tower are carving the ice sheet from below.

Over the past 50 years, 39 of the park's glaciers have shrunk dramatically, some by as much as 85 percent.

How do you save a glacier? Refreeze it using snow machines.

The last ice age led to the rise of the woolly mammoth and the vast expansion of glaciers, but it's just one of many that have chilled Earth throughout the planet's 4.5-billion-year history.