Let’s get one thing straight. The saying "blue and green should never be seen" derives from a seafarer's tradition of not painting the hull of a boat green in case it's capsized and is harder to ...

Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising temperatures are once again causing the world’s oceans to turn green.

St. Patrick's Day was once a solemn feast day when you'd be far more likely to see the color blue. In fact, there's even a ...