

Some projections say that by 2040 the Arctic Ocean may see its first ice-free summer in modern history. That means mixed emotions for young scientists seeing the ice for the first time.
(Image credit: Ravenna Koenig/NPR)
Some projections say that by 2040 the Arctic Ocean may see its first ice-free summer in modern history. That means mixed emotions for young scientists seeing the ice for the first time.
(Image credit: Ravenna Koenig/NPR)