Are deep blue seas fading? Oceans turn to new hue across parts of Earth, study finds
Credit: Pixabay/CC0 Public Domain 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 disappearing, particularly in the tropics. “On the whole, low-latitude oceans have become greener in the past