This 2012 satellite photo shows a quartet of near-identical glaciers on Canada's Ellesmere Island. The ice masses help to ...

Antarctic research reveals how rare earth elements move underground through freeze-thaw cycles in desert environments.

It is a polar desert with the lowest recorded temperatures on Earth, according to Encyclopedia Britannica. At Earth’s other pole is another landmass of tundra, the world’s second-largest desert.

It is a polar desert with the lowest recorded temperatures on Earth, according to Encyclopedia Britannica. At Earth’s other pole is another landmass of tundra, the world’s second-largest desert.

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat: This is the hottest temperature ever recorded ...

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.

The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.