A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars.

Sporochnus dotyi has cellular compartments, called “iridescent bodies,” that reflect green light much more than other colors, which is the source of the color effect. Disclaimer: AAAS and ...

In insects, such colors are often considered as anti-predator adaptations, either crypsis or aposematism, or a means of thermoregulation. A less explored alternative is social signaling. Iridescent ...