As ice melts in West Antarctica the ground beneath is quickly rising---a process that could prevent the catastrophic(灾难性的) collapse of ice sheets, according to researchers.

A study published in the journal Science provides a glimmer(一丝;一线) of hope for a region affected by climate change. In recent years, several studies have warned the ice sheet, which contributes to a quarter of melted ice worldwide annually, is very easy to break up. Scientists fear even slightly melting could cause global sea levels to rise by 3 meters.

Researchers at the Technical University of Denmark set out to answer how the bedrock underneath the ice sheet of West Antarctica behaves as the ice melts. To study the land, the team analyzed data collected by high-precision GPS equipment positioned on remote rock formations in West Antarctica, which measured movements of the land down to the millimeter over a 10-year period.

“After a heroic effort to install and maintain the network of sensors in one of the least accessible places on the planet, the team has been rewarded with incredibly valuable data, which tell an incredible story about the Barth,” wrote Valentina Barletta.

The team found that the Earth was pushing the bedrock to rise faster than expected. In 2014, the surface rose by 41 millimeters: four to five times quicker than predicted. In 100 years, the land could be up to 10 meters higher than it is currently.

It is hoped that as the ice melts, the Earth's crust(地壳) will bounce back much faster than previously expected. In turn, this could stabilize what the researchers described as the "catastrophic collapse" of the ice sheet.

Barletta told Newsweek the ice sheet will never be stable if global warming becomes too extreme. “Reducing the greenhouse gas will give the ice sheet a better chance of survival because that would allow some known and unknown feedback(反馈) to create better conditions for the ice,” she said.

The name Sahara comes from the Arabic word for “desert” or “steppe”. At 3.5 million square miles, an area roughly the size of the United States, the Sahara Desert in northern Africa is the largest desert in the world. It spans the continent from the Atlantic Ocean to the Red Sea. Daytime temperatures can reach as high as 130 F. But it can also be as low as 2.5 percent, the lowest in the world. Most of the Sahara receives less than five inches of rain per year, while large areas sometimes have no rainfall at all for years.

At the heart of the Sahara is the landlocked north African country of Niger. Here the sand dunes can be 100 feet tall and several miles long. Here sand plains stretch over an area larger than Germany where there is neither water nor towns. Yet sitting in the midst of the surrounding desert is the town of Bilma. Suddenly there are pools of clear water. Surprisingly, there are groves of date palms. Underground water resources, or oases(绿洲), sufficient to support irrigated(灌溉)agriculture are found in dry stream beds and depressions. Irrigation ditches run off a creek to water fields. Corn, ‘cassava, tea, peanuts:hot peppers, and orange, lime, and grapefruit trees grow in these fields. Donkeys and goats graze on green grass.

The Sahara of Niger is still a region where you can see a camel caravan of 500 camels tied together in loose lines as long as a mile, traveling toward such oasis towns. There a caravan will collect life-sustaining salt, which is mined from watery basins, and transport it up to 400 miles back to settlements on the edges of the desert. The round trip across the vast sands takes one month