With thick ice gone, Arctic sea ice changes more slowly

The Arctic Ocean's blanket of sea ice has changed since 1958 from predominantly older, thicker ice to mostly younger, thinner ice, according to new research published by NASA scientist Ron Kwok of the Jet Propulsion Laboratory ...

Navy wants small warships that pack a bigger punch

The Navy's fast-and-maneuverable littoral combat ship was criticized for lacking enough firepower and armor to survive a maritime battle. The Navy is addressing those concerns with a new class of small-but-powerful frigates ...

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