So the sky isn’t blue, at least not always. It is a glow-in-the-dark night sky too, colored a mix of green, yellow, and red. Its colors result from scattered sunlight, oxygen, and sodium from ...

Additionally, shades like blue and gray foster a sense of calm — an ideal state for making intelligent decisions. Very vibrant colors like yellow and lime green, while cheerful, can provoke ...

From a distance, a green bush cricket (Tettigonia cantans) can easily be mistaken for a plant appendage, and that's exactly ...

Animals produce a variety of red and yellow pigments that vary biochemically. Not so for blue. We normally see a bullfrog as green because of the structural blue plus the presence of a yellow pigment.