Plastic water bottle caps are color coded based on the type of water: blue caps indicate "spring water"; black caps signify alkaline water; green caps signal flavored water, and white caps mean ...

What do you picture when you think of water? An icy, refreshing drink? A crystal-blue ocean stretching to the horizon? A lake reflecting majestic mountains? Or a small pond that looks dark and murky?

How many of the world's lakes have blue water, as opposed to green, brown or some other color? What does a lake's color say about its health, and what causes lake color to change? Scientists know a ...

Courtney Di Vittorio receives funding from the North Carolina Attorney General's Office Environmental Enhancement Grant Program (award WFU021PRE1) to collect data at High Rock Lake, NC. She is ...