northern lights ?

It is a phenomena that is observable in the northern hemisphere during certain times of the year when solar radiation bounces off of the Earths ionosphere, and energizes particles. As the particles de-energize, they give off a spectrum of light (energy). based on the type of gas and the amount of energy, different colors of light are given off.

The results is a sea of colors at night in the skies.

They are also know as Aurora Borealis. (Northern Lights)

An aurora (plural aurorae/auroras) is an electro-static phenomenon, characterised by a bright glow and caused by the collision of charged particles in the magnetosphere with atoms in the Earth's upper atmosphere. An aurora is usually observed in the night sky, particularly in the polar zone. For this latter reason, some scientists call it a "polar aurora" (or "aurora polaris"). In northern latitudes, it is known as the aurora borealis (IPA /ɔˈɹɔɹə bɔɹiˈælɪs/), which is named after the Roman goddess of the dawn, Aurora, and the Greek name for north wind, Boreas. Especially in Europe, it often appears as a reddish glow on the northern horizon, as if the sun were rising from an unusual direction. The aurora borealis is also called the northern lights since it is only visible in the North sky from the Northern Hemisphere. The aurora borealis most often occurs from September to October and from March to April. Its southern counterpart, aurora australis, has similar properties. Australis is the Latin word for "of the South".

The Van Allen radiation belt is bombarded by billions of electrons streaming in from the sun, the radiation belt is excited and produces waves of visible light as a result.

the northern lights (and there are southern lights also) are a naturally occurring phenomenon caused by the radiation from the sun interacting with the earth's atmosphere.

for more info see here:

http://apod.nasa.gov/apod/ap040730.html

here:

http://www.exploratorium.edu/learning_studio/auror...

or here:

http://fairbanks-alaska.com/northern-lights-alaska...

It's a fine crossbreed of marijuana, part indica part sativa, for that nice, smooth high. But don't be fooled, it's rare in the US so the punks selling it probably are just pitching it to be NL.

It's an old strain so there are many derivatives such as NL Haze, NL Silver, etc.

a natural phenominon