1Ninety million years ago, the Arctic Ocean was warm and ice-free year-round.
2The Arctic Ocean is likely to be ice-free in summers within decades.
3There is no point having ice-free roads if the footpaths are like ice-rinks.
4The Arctic is nearly ice-free in summer, as early as 2050.
5The Arctic Ocean is widely predicted to be ice-free in summertime by 2050.
6Dark gray shows ice-free areas, while green is sea ice.
7What would later be the Antarctic was ice-free-possiblyeven the home of the Beings.
8But soon a dark, ice-free cape peeped out of the mist in the north-east.
9Normally the crater lake isn't ice-free until June or July.
10The boat cast off and moved into the ice-free channel.
11But environmentalists say Arctic offshore drilling poses special risks, including remoteness and limited ice-free seasons.
12He had not asked any questions about the ice-free pools Sara Fredrika had spoken about.
13But now, enough had receded to reveal an ice-free corridor, in places 30 miles wide.
14This suggests the Arctic will be entirely ice-free in the summer months within decades, scientists said.
15Our view is that a seasonally ice-free Arctic Ocean might be realized as early as 2030.
16The island is the most accessible part of greater Antarctica, remaining ice-free for most of the year.