index - a numerical scale used to compare variables with one another or with some reference number. 1  margin of error, margin of safety, safety margin - the margin required in order to insure safety; in engineering the margin of safety is the strength of the material minus the anticipated stress.
Nutty Ways to Celebrate Squirrel Appreciation Day This Year. SQUIRRELS! Whether you love them or loathe them, National Squirrel Appreciation Day, January 21st, is a great time to take a few moments and learn about these nutty animals. If you count flying squirrels we have 10 tree species in North America.
Chinese New Year: How to make a traditional Jiaozi dumpling. The new Chinese year, The Year of the Monkey, begins on Monday 8 February 2016, with festivities kicking off the day before New Year and continuing until the 15th day, when the Lantern Festival takes place.