A mysterious duck-like sound in the ocean is finally identified -- but other puzzling noises remain unsolved.
Rushing rivers are helping melt Arctic sea ice, according to new research by NASA scientists. Continue reading →
Arctic sea ice extent rebounds from last year's record low, but sea ice volume continues to decrease. Continue reading →
Melting ice around the Antarctic may paradoxically be preventing ice melt on the ocean surface. ->
Arctic nations need to prepare for years when extreme conditions lead to widespread polar bear malnutrition. ->
The start of Arctic spring/summer sea ice melt has begun; tying this year's furthest winter extent south with 2006 as the lowest on record.
Arctic summer ice coverage may hold strong for a decade, despite global average temperatures rise.
Disappearing sea ice could mean fewer and fewer polar bear cubs.
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