For the longest time, minimalistic manicures have been just that; super minimal. We've seen quite a few less-is-more trends ...

Blue-ringed octopuses flash their rings in warning, turning them an iridescent blue to signal their agitation ... population trends of blue-ringed octopuses are looking like, the effects of climate ...

These noctilucent clouds, otherwise known as "night-shining" clouds at very high altitudes, are the result of an exquisite scattering of sunlight off them, producing incredible iridescent effects.