Purple Earth Hypothesis suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for ...

For party animals, few holidays match the joy (and mayhem) of Mardi Gras. If you count yourself among them, you know that the vibrant New Orleans tradition takes place on Fat Tuesday—that’s March 4 ...

Consumer Reports tested 58 dog foods to evaluate their nutrient levels and safety. From big brands like Blue Buffalo and ...