1, It is quite certain that much of the ice-free material left behind by a dying comet is extremely weak and fluff.

2, Water extraction from ice-free rocks may seem a bit strange, but it has a strong foundation in our study of meteorites.

3, Lakes that are ice-free in summer begin cooling at their surface late in the season.

4, Ice-free sea absorbs more heat and accelerates global warming.

5, And the Northwest Passage in the Arctic became ice-free for the first time in living memory.

6, One of the world's largest natural, ice-free harbors,[http:///ice-free.html] it is where the manufactured goods from Asia arrive throughout the year.

7, The northern hemisphere remained relatively ice-free for longer, with Greenland and the Arctic becoming heavily glaciated only around 3.2 million years ago.

8, The second option is to extract the water from ice-free minerals that contain water of hydration.

9, The Arctic Ocean, which experienced record melting last year, could be ice-free in the summer as soon as 2013, decades ahead of what the earlier models told us.

10, The researchers predict that if current conditions persist, the mountain could be ice-free as early as 2022.

11, The most obvious consequence of ice loss will be rising sea levels from glaciers sliding into the ocean, and increased global warming as ice-free waters absorb solar energy.

12, "The probability of ship-strike mortalities may increase with thelikely future opening of an ice-free Northwest Passage, " theresearchers note.

13, Scientists who predicted a few years ago that Arctic summers could be ice-free by 2013 now say summer sea ice will probably be gone in this decade.

14, "All indications are that sea ice will continue to decline over the next several decades," he said. "We are still looking at a seasonally ice-free Arctic in twenty to thirty years.

15, Once there, he would cling to the handrail until he reached the lower steps that the warmer tunnel air kept ice-free.

16, Sea ice cover is in a downward spiral and may have passed the point of no return, with a possible ice-free Arctic Ocean by summer 2030, senior scientist Mark Serreze said.

17, That's what makes it so difficult to predict exactly how rapidly we might see the Arctic go ice-free.

18, He thinks there is slightly less than a 50-50 chance the North Pole will be ice-free.

19, Adds economist Gary Yohe of Wesleyan University, another co-author: "We will commit to an ice-free Arctic sometime this century.

20, In examining the mechanisms behind this finding, Tietsche et al. found that unusually large amounts of heat indeed accumulate in the ocean during the ice-free summer.

21, We also don't know what the winds will be like this summer, and they play an important role in determining just what parts of the Arctic Ocean are ice-free.

22, It was closer to China, Japan and America's Pacific coast. Crucially, unlike Nikolaevsk, Vladivostok was ice-free.

23, A few years ago the projection was that the Arctic Ocean would be ice-free in the summers by about the year 2080.

24, There's a 50-50 chance that the North Pole will be ice-free this summer, which would be a first in recorded history, a leading ice scientist says.