The center says September Arctic sea ice is decreasing at a rate of more than eleven percent every ten years.

VOA: special.2009.10.27

He says a warmer Arctic and thinner sea ice changes the balance between the normally cold Arctic and warmer areas.

VOA: special.2009.05.05

He was about half way across the river when the tree trunk moved suddenly, John fell from it onto the ice.

VOA: special.2010.06.26

He explains that as the water freezes, it produces heat,and the ice forms a protective blanket around the tree.

VOA: special.2010.01.12

Many of the lakes around the Grand Tetons were formed millions of years ago by slow-moving sheets of ice.

VOA: special.2009.02.16

People moved into the American Southwest more than ten thousand years ago as the last ice age was ending.

VOA: special.2010.07.05

It has high mountains. It has valleys formed by ancient ice that cut deep into the Earth millions of years ago.

VOA: special.2009.01.07

Climate change is also leading to the melting of ice in other areas, such as Mount Kilimanjaro in northeastern Tanzania.

VOA: special.2009.04.22

Scientists say climate change and human activity have increasingly led to the melting of massive pieces of Antarctic ice.

VOA: special.2009.04.22

Still,the National Snow and Ice Data Center says the most recent September measurement was the third lowest since nineteen seventy-nine.

VOA: special.2009.10.27

One of the scientists says the past six years have shown the lowest Arctic sea ice cover ever measured.

VOA: special.2009.05.05

It made the ice thin. If he stepped there, he might break through the ice into a pool of water.

VOA: special.2010.05.01

Bob Doughty and Faith Lapidus tell about some of the winning American athletes on and off the ice and snow.

VOA: special.2010.02.26

When melting snow crystals or raindrops fall through very cold air, they freeze to form small particles of ice,called sleet.

VOA: special.2010.01.05