The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see. When sunlight hits ...
A large swath of Earth’s oceans changed color over the past 20 years — and human activity is suspected to have caused it, a new study reports. That deep blue color depicted so richly in postcards is ...
NASA's Earth Observatory captured striking new satellite imagery showing iceberg A-23A, once one of the largest icebergs ever ...
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