Do Craze Lines Mean Your Teeth are Cracked? Although craze lines are very tiny cracks in the outermost layer of your tooth, you donât need to worry about your tooth cracking in half. One good way to think about craze lines is to take a look at the above photo of this porcelain doll. The cracks in the porcelain occurred after years of use.
With the invention and installation of ski lifts in the 1930s, Alpine skiing became an increasingly popular and common activity, first in Europe and North America and then later in Australia, New Zealand, Chile, Argentina, and Japan.
Popularity of Womenâs Sports on the Rise. In spite of these disparate numbers, womenâs sports are becoming more popular with participants and viewers. Every year for a quarter of a century, female athletic participation has increased with 3.26M girls playing sports in 2013 to 2014. More than 40% of college and high school athletes are women.