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 ...

Picture the vast expanse of ocean you've seen in postcards or vacation photos - that brilliant blue stretching endlessly toward the horizon. Yet something profound is happening beneath those familiar ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Human-driven climate change is altering the world’s oceans, including their very ...