An internet lingo created to battle the the overuse of the term lol by using different abbreviations to more accurately describe the user's expressions.

1. NL=Not Laughing. Used when a friend makes an unfunny joke but thought it was hilarious.

2. Ss=Slight Smile. Used when the user has a slight smile on their face, an expression that many people described innacurately with the term "lol".

3. Cg=Cracked Grin. Used when the user is halfway between a slight smile and loling.

4. Lol=Laughing out loud. Only to be used when the user is literally laughing audibly in a text or online chat.

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.