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 ...
Iceberg A-23A as seen from the International Space Station. (Image: NASA) NASA's Earth Observatory captured striking new ...
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